idiomatical
  (a.)慣用的;特色的
  Id·i·o·mat·ic Id·i·o·mat·ic·al a.
  1. Of or pertaining to, or conforming to, the mode of expression peculiar to a language; as, an idiomatic meaning; an idiomatic phrase. -- Id*i*o*mat*ic*al*ly, adv.
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  idiomatical
       adj : of or relating to or conforming to idiom; "idiomatic
             English" [syn: idiomatic]