The planet and the star both orbit around a common centre of mass between them.
地球轨道的明星都围绕一个共同的质量中心之间。
This point is called their centre of mass.
这一点是要求其质量中心。
In fact, the centre of mass for the Sun-Jupiter system is actually inside the Sun.
事实上，该中心的大规模的太阳木星系统实际上是在太阳。
I am drawn into the centre of the heaving mass of people and let loose.
我被涌到了起伏的人群中心，全身放松。
I am drawn into the centre of the heaving mass of people and let loose.
我被涌到了起伏的人群中心，全身放松。
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