名词
中文翻译：引力输送器
同义词：
['gravity conveyor', 'gravity transporter例句：1. The gravitational pull of the earth is what keeps us grounded.（地球的引力让我们脚踏实地。）']
例句：
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1. The gravitational pull of the earth is what keeps us grounded.
地球的引力让我们脚踏实地。
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2.The gravitational force between the planets is what causes their orbits.
行星之间的引力作用导致它们的轨道。
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3.The gravitational waves from a black hole are being detected by LIGO.
LIGO正在探测黑洞产生的引力波。