velocity
/vəˈlɒsəti/
noun
标准词条
CET-4
一句话记住
速度;速率
释义与例句
noun
速度;速率
the speed of something in a given direction; rapidity of motion
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The car reached a velocity of 200 km/h.
这辆车达到了每小时200公里的速度。
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Light travels at a constant velocity.
光以恒定的速度传播。
展开其余 1 条例句
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The rocket accelerated to escape velocity.
火箭加速到逃逸速度。
词源与构词
记忆钩子
veloc(快,拉丁 velox)+ ity(名词)= 速度
词族与关联词
词族(同一词根派生出的不同词性或形式)
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velocimeter 测速计device for measuring velocity
同义词
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speed 速度speed is the common term; velocity includes direction in physicsThe car was travelling at high speed. 这辆车高速行驶。
反义词
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slowness 缓慢slowness is the state of moving at low speedThe slowness of the process frustrated everyone. 过程的缓慢让每个人都很沮丧。
常见搭配
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high velocity 高速The bullet hit the target at high velocity. 子弹以高速击中目标。
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low velocity 低速The low velocity of the train made the journey long. 火车的低速使旅程变长。
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escape velocity 逃逸速度A spacecraft must reach escape velocity to leave Earth. 航天器必须达到逃逸速度才能离开地球。