动词短语
中文翻译：自由落体运动同义词
同义词：
['free fall', 'free falling']
例句：
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1. The athlete is free-falling down the slope.
运动员正在自由落体下滑。
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2. The spacecraft was free-falling when it hit the ground.
宇宙飞船在撞击地面时正处于自由落体状态。
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3. The ball is free-falling through the air.
球正自由落体在空中飞行。