Most astronomers believe that the large concentration of mass at the galaxy's center is a black hole whose gravity is causing the gas to whirl.

大多数天文学家认为，星系中心的大量物质是一个黑洞，它的引力导致气体旋转。

youdao

The center of gravity of Hadfield's book differs from Highley's.

哈德菲尔德的书的重心与海利的书不同。

youdao

The point is that for some time the center of gravity for achievement has been shifting away from the topmost colleges.

值得强调的一点就是在某段时间内，成功的重力中心从顶尖的学校发生了转移。

youdao

So the Pentagon awarded a 4-billion-dollar contract to build a version with a lower center of gravity and improved suspension.

VOA: standard.2010.08.01

And my center of gravity is a little bit lower." "I feel like sometimes it is a little more difficult to knock me down.

VOA: standard.2010.02.09

The difference may be where the center of gravity of the body politic lies.

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Like a human, it can quickly shift its center of gravity and change direction.

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The Chinese have clearly grasped the significance of the relationship between information and center of gravity.

CENTERFORSECURITYPOLICY: Center for Security Policy | Chinese Information Warfare: A Phantom Menace or Emerging Threat? | Page: 7