单词：undersurface
a. 水面下的
undersurface的用法和样例：
例句
- He imagined the ship dangling upside down on the undersurface of the Earth, the giant fingers of gravity holding them firmly in place.他想象着飞船吊在地球下面上下晃荡，巨大的引力手指把他们紧紧地抓在这个地方。
词汇搭配
- undersurface collection底层表面集电...
- undersurface pressure下表面压力
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加州英语分级G6