or·i·fice /ˈɔrəfəs, ˈɑr-/
 孔口


 or·i·fice /ˈɔrəfəs, ˈɑr-/ 名詞
 口,銳孔,洞口,針孔,通氣口,量孔,噴孔,漏孔,注入孔,節流孔,噴嘴,噴管,管口,孔板


 Or·i·fice n.  A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound.
    Etna was bored through the top with a monstrous orifice.   --Addison.

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 orifice
      n : an aperture or hole opening into a bodily cavity; "the
          orifice into the aorta from the lower left chamber of the
          heart" [syn: opening, porta]