ac·tive /ˈæktɪv/
 (a.)活動的活躍的,積極的,有效的,主動的,活性的,現行的,現役的
 ac·tive /ˈæktɪv/ 形容詞
 有效的,活性的
 active
 現行的
 active
 待命; 使用中的; 有效的; 現行的
 active
 現用 有效 主動
 Ac·tive a.
 1. Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to passive, that receives; as, certain active principles; the powers of the mind.
 2. Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
    Active and nervous was his gait.   --Wordsworth.
 3. In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.
 4. Given to action; constantly engaged in action; energetic; diligent; busy; -- opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
 5. Requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes.
 6. Given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman.
 7. Brisk; lively; as, an active demand for corn.
 8. Implying or producing rapid action; as, an active disease; an active remedy.
 9. Gram. (a) Applied to a form of the verb; -- opposed to passive. See Active voice, under Voice.  (b) Applied to verbs which assert that the subject acts upon or affects something else; transitive. (c) Applied to all verbs that express action as distinct from mere existence or state.
 Active capital, Active wealth, money, or property that may readily be converted into money.
 Syn: -- Agile; alert; brisk; vigorous; nimble; lively; quick; sprightly; prompt; energetic.
 ◄ ►
 active
      adj 1: tending to become more severe or wider in scope; "active
             tuberculosis" [ant: inactive]
      2: engaged in or ready for military or naval operations; "on
         active duty"; "the platoon is combat-ready"; "review the
         fighting forces" [syn: combat-ready, fighting(a)]
      3: disposed to take action or effectuate change; "a director
         who takes an active interest in corporate operations"; "an
         active antagonism"; "he was active in drawing attention to
         their grievances" [ant: passive]
      4: taking part in an activity; "an active member of the club";
         "he was politically active"; "the participating
         organizations" [syn: participating]
      5: characterized by energetic activity; "an active toddler";
         "active as a gazelle"; "an active man is a man of action"
         [ant: inactive]
      6: exerting influence or producing an effect; "an active
         ingredient" [ant: inactive]
      7: full of activity or engaged in continuous activity; "an
         active seaport"; "an active bond market"; "an active
         account" [ant: inactive]
      8: in operation; "keep hope alive"; "the tradition was still
         alive"; "an active tradition" [syn: alive(p)]
      9: of the sun; characterized by a high level activity in
         sunspots and flares and radio emissions [ant: quiet]
      10: expressing that the subject of the sentence has the semantic
          function of actor: "Hemingway favors active
          constructions" [ant: passive]
      11: expressing action rather than a state of being; used of
          verbs (e.g. `to run') and participial adjectives (e.g.
          `running' in `running water') [syn: dynamic] [ant: stative]
      12: (of e.g. volcanos) erupting or liable to erupt; "active
          volcanos" [ant: dormant, extinct]
      13: producing activity or change [ant: counteractive]
      14: engaged in full-time work; "active duty"; "though past
          retirement age he is still active in his profession"
          [ant: inactive]
      15: being in physical motion; "active fish in the aquarium"
      16: characterized by energetic bodily activity; "tennis is an
          active sport"; "a very physical dance performance" [syn:
          physical]
      n 1: chemical agent capable of activity [syn: active agent]
      2: the voice used to indicate that the grammatical subject of
         the verb is performing the action or causing the happening
         denoted by the verb; "`The boy threw the ball' uses the
         active voice" [syn: active voice] [ant: passive voice]
      3: a person devoted to the active life [ant: contemplative]