名词
中文翻译：动力
同义词：
['kinetic energy', 'kinetic force']
例句：
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1.The car accelerates when the gas pedal is pressed.
踩下油门时，汽车加速。
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2.The ball bounced back after being hit by the ball.
球被球击中后弹了回来。
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3. The wind carries the leaves of the tree in its wake.
风带着树的叶子在它后面飘动。