cru·cial /ˈkruʃəl/
 (a.)決定性的,重要的,嚴厲的


 Cru·cial a.
 1. Having the form of a cross; appertaining to a cross; cruciform; intersecting; as, crucial ligaments; a crucial incision.
 2. Severe; trying or searching, as if bringing to the cross; decisive; as, a crucial test.

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 crucial
      adj 1: of extreme importance; vital to the resolution of a crisis;
             "a crucial moment in his career"; "a crucial
             election"; "a crucial issue for women" [syn: important]
             [ant: noncrucial]
      2: having crucial relevance; "crucial to the case"; "relevant
         testimony" [syn: relevant]
      3: of the greatest importance; "the all-important subject of
         disarmament"; "crucial information"; "in chess cool nerves
         are of the essence" [syn: all-important(a), {all
         important(p), essential, of the essence(p)]
      4: having the power or quality of deciding; "the crucial
         experiment"; "cast the deciding vote"; "the determinative
         (or determinant) battle" [syn: deciding(a), determinant,
          determinative, determining(a)]