ob·serv·able /əbˈzɝvəbəl/
 (a.)可觀察的;看得見的


 Ob·serv·a·ble a.
 1. Capable of being observed; discernible; noticeable.
    The difference is sufficiently observable.   --Southey.
 -- Ob*serv*a*ble*ness, n. -- Ob*serv*a*bly, adv.

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 observable
      adj : capable of being seen or noticed; "a discernible change in
            attitude"; "a clearly evident erasure in the
            manuscript"; "an observable change in behavior" [syn: discernible,
             evident]