| 单词 | gravitational attraction |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔attraction〕All matter exerts a gravitational attraction.所有的物质都有引力。牛津搭配〔escape velocity〕The minimum velocity that a body must attain to overcome the gravitational attraction of another body, such as the earth.逃逸速度，脱离速度：一个物体为了摆脱另一物体万有引力的作用而必须具有的速度，例如地球的第二宇宙速度美国传统〔tide〕The periodic variation in the surface level of the oceans and of bays, gulfs, inlets, and estuaries, caused by gravitational attraction of the moon and sun.潮，潮汐：由月球和太阳的重力吸引造成的海洋、海湾、水湾及河口等处水面高度的周期性变化美国传统〔zero gravity〕The condition of apparent weightlessness occurring when the centrifugal force on a body exactly counterbalances the gravitational attraction on it.失重状态：当作用在物体上的离心力与万有引力相抵消时出现的明显失重状态美国传统 |
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