资料来源 : pyDict

使通过的,让过去的,可通的

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

Pervious \Per"vi*ous\, a. [L. pervis; per + via a way. See
   {Per-}, and {Voyage}.]
   1. Admitting passage; capable of being penetrated by another
      body or substance; permeable; as, a pervious soil.

            [Doors] . . . pervious to winds, and open every way.
                                                  --Pope.

   2. Capable of being penetrated, or seen through, by physical
      or mental vision. [R.]

            God, whose secrets are pervious to no eye. --Jer.
                                                  Taylor.

   3. Capable of penetrating or pervading. [Obs.] --Prior.

   4. (Zo["o]l.) Open; -- used synonymously with perforate, as
      applied to the nostrils or birds.

资料来源 : WordNet®

pervious
     adj : admitting of passage or entrance; "pervious soil"; "a metal
           pervious to heat" [ant: {impervious}]