pow·er·ful /ˈpaʊ(ə)rfəl/
 (a.)有力的,有權力的,強大的


 Pow·er·ful a.
 1. Full of power; capable of producing great effects of any kind; potent; mighty; efficacious; intense; as, a powerful man or beast; a powerful engine; a powerful argument; a powerful light; a powerful vessel.
 The powerful grace that lies
 In herbs, plants, stones, and their true qualities.   --Shak.
 2. Mining Large; capacious; -- said of veins of ore.
 Syn: -- Mighty; strong; potent; forcible; efficacious; energetic; intense.
 -- Pow*er*ful*ly, adv. -- Pow*er*ful*ness, n.

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 powerful
      adj 1: having great power or force or potency or effect; "the most
             powerful government in western Europe"; "his powerful
             arms"; "a powerful bomb"; "the horse's powerful kick";
             "powerful drugs"; "a powerful argument" [ant: powerless]
      2: strong enough to knock down or overwhelm; "a knock-down
         blow" [syn: knock-down(a)]
      3: having the power to influence or convince; "a cogent
         analysis of the problem"; "potent arguments" [syn: cogent,
          potent]
      4: (of a person) possessing physical strength and weight;
         rugged and powerful; "a hefty athlete"; "a muscular
         boxer"; "powerful arms" [syn: brawny, hefty, muscular,
          sinewy]
      5: displaying superhuman strength or power; "herculean
         exertions" [syn: herculean]
      adv : (Southern regional intensive) very; "the baby is mighty
            cute"; "he's mighty tired"; "it is powerful humid";
            "that boy is powerful big now"; "they have a right nice
            place" [syn: mighty, right]