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    1. 首頁英語詞典speedspeed英英釋意

      speed

      英 [spi?d] 美[spid]
      • vi. 超速,加速;加速,迅速前行;興隆
      • n. 速度,速率;迅速,快速;昌盛,繁榮
      • vt. 加快…的速度;使成功,使繁榮
      • n. (Speed)人名;(英)斯皮德

      英英釋意


      1. distance travelled per unit time
      2. a rate (usually rapid) at which something happens;
      "the project advanced with gratifying speed"
      3. changing location rapidly
      4. the ratio of the focal length to the diameter of a (camera) lens system
      5. a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression