ac·tiv·i·ty /ækˈtɪvəti/
 C活動;U活性,活力


 ac·tiv·i·ty /ækˈtɪvətɪ/ 名詞
 活動,活動度,活性,效能


 activity
 活動率; 活動性


 activity
 活動比


 activity
 活動率 活動性


 Ac·tiv·i·ty n.; pl. Activities   The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities. “The activity of toil.”
 Syn: -- Liveliness; briskness; quickness.

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 activity
      n 1: any specific activity; "they avoided all recreational
           activity" [ant: inactivity]
      2: the state of being active; "his sphere of activity"; "he is
         out of action" [syn: action, activeness] [ant: inaction,
          inaction, inaction]
      3: an organic process that takes place in the body;
         "respiratory activity" [syn: bodily process, {body
         process, bodily function]
      4: (chemistry) the capacity of a substance to take part in a
         chemical reaction; "catalytic activity"
      5: a process existing in or produced by nature (rather than by
         the intent of human beings); "the action of natural
         forces"; "volcanic activity" [syn: natural process, {natural
         action, action]
      6: the trait of being active; moving or acting rapidly and
         energetically; "the level of activity declines with age"
         [syn: activeness] [ant: inactiveness]