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velocity

noun
🔊/vəˈlɒsəti/
🔊/vəˈlɑːsəti/
 [uncountable, countable]
(plural velocities)
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  1. (specialist) the speed of something in a particular direction（沿某一方向的）速度
    • the velocity of light光速
    • to gain/lose velocity加速；减速
    • a high-velocity rifle高速步枪
    Extra Examples
    • Light travels at a constant velocity.光以恒定速度传播。
    • to move with a uniform velocity匀速地运动
    Topics Physics and chemistryc2
    Oxford Collocations Dictionaryadjective
    • high
    • low
    • constant
    • …
    verb + velocity
    • achieve
    • attain
    • reach
    • …
    velocity + verb
    • decrease
    • increase
    preposition
    • at a/​the velocity
    See full entry
  2. (formal) high speed高速；快速
    • Jaguars can move with an astonishing velocity.美洲豹跑起来速度惊人。🔊🔊
    3. Word Originlate Middle English: from French vélocité or Latin velocitas, from velox, veloc- ‘swift’.