资料来源 : pyDict

对,对抗,反对;防备,预防;以…为背景,在…的衬托下,与…相比

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

Against \A*gainst"\ (?; 277), prep. [OE. agens, ageynes, AS.
   ongegn. The s is adverbial, orig. a genitive ending. See
   {Again}.]
   1. Abreast; opposite to; facing; towards; as, against the
      mouth of a river; -- in this sense often preceded by over.

            Jacob saw the angels of God come against him.
                                                  --Tyndale.

   2. From an opposite direction so as to strike or come in
      contact with; in contact with; upon; as, hail beats
      against the roof.

   3. In opposition to, whether the opposition is of sentiment
      or of action; on the other side; counter to; in
      contrariety to; hence, adverse to; as, against reason;
      against law; to run a race against time.

            The gate would have been shut against her.
                                                  --Fielding.

            An argument against the use of steam. --Tyndale.

   4. By of before the time that; in preparation for; so as to
      be ready for the time when. [Archaic or Dial.]

            Urijah the priest made it, against King Ahaz came
            from Damascus.                        --2 Kings xvi.
                                                  11.

   {Against the sun}, in a direction contrary to that in which
      the sun appears to move.