vig·or·ous /ˈvɪg(ə)rəs/
 (a.)精力充沛的,元氣旺盛的,有力的
 Vig·or·ous a.
 1. Possessing vigor; full of physical or mental strength or active force; strong; lusty; robust; as, a vigorous youth; a vigorous plant.
 Famed for his valor, young,
 At sea successful, vigorous and strong.   --Waller.
 2. Exhibiting strength, either of body or mind; powerful; strong; forcible; energetic; as, vigorous exertions; a vigorous prosecution of a war.
    The beginnings of confederacies have been always vigorous and successful.   --Davenant.
 -- Vig*or*ous*ly, adv. -- Vig*or*ous*ness, n.
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 vigorous
      adj 1: characterized by forceful and energetic action or activity;
             "a vigorous hiker"; "gave her skirt a vigorous shake";
             "a vigorous campaign"; "a vigorous foreign policy";
             "vigorous opposition to the war"
      2: strong and active physically or mentally; "a vigorous old
         man who spent half of his day on horseback"- W.H.Hudson