原子钟(Atomic Clocks)表明重力能减慢时间。
每天花五分钟时间，自在地随意平衡摆脱地球重力的束缚。
Take gravity out of the equation once a day for five minutes.
卫星携带的原子钟必须和地面的运行速度不一样，因为那里的重力更强。
These carry atomic clocks that have to run at a different speed to those on the ground because gravity is greater there.
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