neg·li·gi·ble /ˈnɛglɪʤəbəl/
 (a.)可以忽略的,不足取的,無用的
 Neg·li·gi·ble a.  That may be neglected, disregarded, or left out of consideration; too small or unimportant to be worthy of notice.
    Within very negligible limits of error.   --Sir J. Herschel.
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 negligible
      adj 1: so small as to be meaningless; insignificant; "the effect
             was negligible"
      2: not worth considering; "he considered the prize too paltry
         for the lives it must cost"; "piffling efforts"; "a
         trifling matter" [syn: paltry, trifling]