资料来源 : pyDict

确实的,明确的;积极的,肯定的;正的,阳性的;完全的十足的正片

资料来源 : Webster's Revised Unabridged Dictionary (1913)

   {Law of Charles} (Physics), the law that the volume of a
      given mass of gas increases or decreases, by a definite
      fraction of its value for a given rise or fall of
      temperature; -- sometimes less correctly styled {Gay
      Lussac's law}, or {Dalton's law}.

   {Law of nations}. See {International law}, under
      {International}.

   {Law of nature}.
       (a) A broad generalization expressive of the constant
           action, or effect, of natural conditions; as, death
           is a law of nature; self-defense is a law of nature.
           See {Law}, 4.
       (b) A term denoting the standard, or system, of morality
           deducible from a study of the nature and natural
           relations of human beings independent of supernatural
           revelation or of municipal and social usages.

   {Law of the land}, due process of law; the general law of the
      land.

   {Laws of honor}. See under {Honor}.

   {Laws of motion} (Physics), three laws defined by Sir Isaac
      Newton: (1) Every body perseveres in its state of rest or
      of moving uniformly in a straight line, except so far as
      it is made to change that state by external force. (2)
      Change of motion is proportional to the impressed force,
      and takes place in the direction in which the force is
      impressed. (3) Reaction is always equal and opposite to
      action, that is to say, the actions of two bodies upon
      each other are always equal and in opposite directions.

   {Marine law}, or {Maritime law}, the law of the sea; a branch
      of the law merchant relating to the affairs of the sea,
      such as seamen, ships, shipping, navigation, and the like.
      --Bouvier.

   {Mariotte's law}. See {Boyle's law} (above).

   {Martial law}.See under {Martial}.

   {Military law}, a branch of the general municipal law,
      consisting of rules ordained for the government of the
      military force of a state in peace and war, and
      administered in courts martial. --Kent. Warren's
      Blackstone.

   {Moral law},the law of duty as regards what is right and
      wrong in the sight of God; specifically, the ten
      commandments given by Moses. See {Law}, 2.

   {Mosaic}, or {Ceremonial}, {law}. (Script.) See {Law}, 3.

   {Municipal}, or {Positive}, {law}, a rule prescribed by the
      supreme power of a state, declaring some right, enforcing
      some duty, or prohibiting some act; -- distinguished from
      international and constitutional law. See {Law}, 1.

   {Periodic law}. (Chem.) See under {Periodic}.

   {Roman law}, the system of principles and laws found in the
      codes and treatises of the lawmakers and jurists of
      ancient Rome, and incorporated more or less into the laws
      of the several European countries and colonies founded by
      them. See {Civil law} (above).

   {Statute law}, the law as stated in statutes or positive
      enactments of the legislative body.

   {Sumptuary law}. See under {Sumptuary}.

   {To go to law}, to seek a settlement of any matter by
      bringing it before the courts of law; to sue or prosecute
      some one.

   {To} {take, or have}, {the law of}, to bring the law to bear
      upon; as, to take the law of one's neighbor. --Addison.

   {Wager of law}. See under {Wager}.

   Syn: Justice; equity.

   Usage: {Law}, {Statute}, {Common law}, {Regulation}, {Edict},
          {Decree}. Law is generic, and, when used with
          reference to, or in connection with, the other words
          here considered, denotes whatever is commanded by one
          who has a right to require obedience. A statute is a
          particular law drawn out in form, and distinctly
          enacted and proclaimed. Common law is a rule of action
          founded on long usage and the decisions of courts of
          justice. A regulation is a limited and often,
          temporary law, intended to secure some particular end
          or object. An edict is a command or law issued by a
          sovereign, and is peculiar to a despotic government. A
          decree is a permanent order either of a court or of
          the executive government. See {Justice}.

Positive \Pos"i*tive\, a.
   1. (Mach. & Mech.)
      (a) Designating, or pertaining to, a motion or device in
          which the movement derived from a driver, or the grip
          or hold of a restraining piece, is communicated
          through an unyielding intermediate piece or pieces;
          as, a claw clutch is a positive clutch, while a
          friction clutch is not.
      (b) Designating, or pertaining to, a device giving a
          to-and-fro motion; as, a positive dobby.

Demonstration \Dem`on*stra"tion\, n. [L. demonstratio: cf. F.
   d['e]monstration.]
   1. The act of demonstrating; an exhibition; proof;
      especially, proof beyond the possibility of doubt;
      indubitable evidence, to the senses or reason.

            Those intervening ideas which serve to show the
            agreement of any two others are called ``proofs;''
            and where agreement or disagreement is by this means
            plainly and clearly perceived, it is called
            demonstration.                        --Locke.

   2. An expression, as of the feelings, by outward signs; a
      manifestation; a show.

            Did your letters pierce the queen to any
            demonstration of grief?               --Shak.

            Loyal demonstrations toward the prince. --Prescott.

   3. (Anat.) The exhibition and explanation of a dissection or
      other anatomical preparation.

   4. (Mil.) a decisive exhibition of force, or a movement
      indicating an attack.

   5. (Logic) The act of proving by the syllogistic process, or
      the proof itself.

   6. (Math.) A course of reasoning showing that a certain
      result is a necessary consequence of assumed premises; --
      these premises being definitions, axioms, and previously
      established propositions.

   {Direct}, or {Positive}, {demonstration} (Logic & Math.), one
      in which the correct conclusion is the immediate sequence
      of reasoning from axiomatic or established premises; --
      opposed to

   {Indirect}, or {Negative}, {demonstration} (called also
      {reductio ad absurdum}), in which the correct conclusion
      is an inference from the demonstration that any other
      hypothesis must be incorrect.

Positive \Pos"i*tive\, n.
   1. That which is capable of being affirmed; reality. --South.

   2. That which settles by absolute appointment.

   3. (Gram.) The positive degree or form.

   4. (Photog.) A picture in which the lights and shades
      correspond in position with those of the original, instead
      of being reversed, as in a negative. --R. Hunt.

   5. (Elec.) The positive plate of a voltaic or electrolytic
      cell.

Positive \Pos"i*tive\, a. [OE. positif, F. positif, L.
   positivus. See {Position}.]
   1. Having a real position, existence, or energy; existing in
      fact; real; actual; -- opposed to negative. ``Positive
      good.'' --Bacon.

   2. Derived from an object by itself; not dependent on
      changing circumstances or relations; absolute; -- opposed
      to relative; as, the idea of beauty is not positive, but
      depends on the different tastes individuals.

   3. Definitely laid down; explicitly stated; clearly
      expressed; -- opposed to implied; as, a positive
      declaration or promise.

            Positive words, that he would not bear arms against
            King Edward's son.                    --Bacon.

   4. Hence: Not admitting of any doubt, condition,
      qualification, or discretion; not dependent on
      circumstances or probabilities; not speculative;
      compelling assent or obedience; peremptory; indisputable;
      decisive; as, positive instructions; positive truth;
      positive proof. ``'T is positive 'gainst all exceptions.''
      --Shak.

   5. Prescribed by express enactment or institution; settled by
      arbitrary appointment; said of laws.

            In laws, that which is natural bindeth universally;
            that which is positive, not so.       --Hooker.

   6. Fully assured; confident; certain; sometimes,
      overconfident; dogmatic; overbearing; -- said of persons.

            Some positive, persisting fops we know, That, if
            once wrong, will needs be always.     --Pope.

   7. Having the power of direct action or influence; as, a
      positive voice in legislation. --Swift.

   8. (Photog.) Corresponding with the original in respect to
      the position of lights and shades, instead of having the
      lights and shades reversed; as, a positive picture.

   9. (Chem.)
      (a) Electro-positive.
      (b) Hence, basic; metallic; not acid; -- opposed to
          {negative}, and said of metals, bases, and basic
          radicals.

   {Positive crystals} (Opt.), a doubly refracting crystal in
      which the index of refraction for the extraordinary ray is
      greater than for the ordinary ray, and the former is
      refracted nearer to the axis than the latter, as quartz
      and ice; -- opposed to negative crystal, or one in which
      this characteristic is reversed, as Iceland spar,
      tourmaline, etc.

   {Positive degree} (Gram.), that state of an adjective or
      adverb which denotes simple quality, without comparison or
      relation to increase or diminution; as, wise, noble.

   {Positive electricity} (Elec), the kind of electricity which
      is developed when glass is rubbed with silk, or which
      appears at that pole of a voltaic battery attached to the
      plate that is not attacked by the exciting liquid; --
      formerly called {vitreous electricity}; -- opposed to
      {negative electricity}.

   {Positive eyepiece}. See under {Eyepiece}.

   {Positive law}. See {Municipal law}, under {Law}.

   {Positive motion} (Mach.), motion which is derived from a
      driver through unyielding intermediate pieces, or by
      direct contact, and not through elastic connections, nor
      by means of friction, gravity, etc.; definite motion.

   {Positive philosophy}. See {Positivism}.

   {Positive pole}.
      (a) (Elec.) The pole of a battery or pile which yields
          positive or vitreous electricity; -- opposed to
          {negative pole}.
      (b) (Magnetism) The north pole. [R.]

   {Positive quantity} (Alg.), an affirmative quantity, or one
      affected by the sign plus [+].

   {Positive rotation} (Mech.), left-handed rotation.

   {Positive sign} (Math.), the sign [+] denoting plus, or more,
      or addition.

资料来源 : WordNet®

positive
     adj 1: characterized by or displaying affirmation or acceptance or
            certainty etc.; "a positive attitude"; "the reviews
            were all positive"; "a positive benefit"; "a positive
            demand" [ant: {negative}, {neutral}]
     2: having a positive electric charge; "protons are positive"
        [syn: {electropositive}] [ant: {negative}, {neutral}]
     3: involving advantage or good; "a plus (or positive) factor"
        [syn: {plus}]
     4: indicating existence or presence of a suspected condition or
        pathogen; "a positive pregnancy test" [syn: {confirming}]
        [ant: {negative}]
     5: formally laid down or imposed; "positive laws" [syn: {prescribed}]
     6: impossible to deny or disprove; "incontrovertible proof of
        the defendant's innocence"; "proof positive"; "an
        irrefutable argument" [syn: {incontrovertible}, {irrefutable}]
     7: of or relating to positivism; "positivist thinkers";
        "positivist doctrine"; "positive philosophy" [syn: {positivist},
         {positivistic}]
     8: greater than zero; "positive numbers"
     9: marked by excessive confidence; "an arrogant and cocksure
        materialist"; "so overconfident and impudent as to speak
        to the queen"; "the less he knows the more positive he
        gets" [syn: {cocksure}, {overconfident}]
     10: persuaded of; very sure; "were convinced that it would be to
         their advantage to join"; "I am positive he is lying";
         "was confident he would win" [syn: {convinced(p)}, {positive(p)},
          {confident(p)}]
     11: granting what has been desired or requested; "a favorable
         reply"; "a positive answer" [syn: {favorable}]

positive
     n : a film showing a photographic image whose tones correspond
         to those of the original subject