名词
中文翻译：失重
同义词：
['weightlessness', 'weightless', 'weight-free']
例句：
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1.In a weightless environment, objects float freely in the air.
在无重力的环境中，物体可以在空中自由漂浮。
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2.The weightless state is achieved by using special materials that are lighter than air.
通过使用比空气轻的特殊材料来实现失重状态。
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3.Weightlessness can be experienced during space travel or in zero gravity environments.
在太空旅行或零重力环境中可以体验到失重状态。