资料来源 : pyDict

在…之前

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

Previous \Pre"vi*ous\, a. [L. praevius going before, leading the
   way; prae before + via the way. See {Voyage}.]
   Going before in time; being or happening before something
   else; antecedent; prior; as, previous arrangements; a
   previous illness.

         The dull sound . . . previous to the storm, Rolls o'er
         the muttering earth.                     --Thomson.

   {Previous question}. (Parliamentary Practice) See under
      {Question}, and compare {Closure}.

   {Previous to}, before; -- often used adverbially for
      previously. ``Previous to publication.'' --M. Arnold. ``A
      policy . . . his friends had advised previous to 1710.''
      --J. H. Newman.

   Syn: Antecedent; preceding; anterior; prior; foregoing;
        former.