1·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。
2·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。
3·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。
4·On our spherical Earth, gravity pulls "down" us toward the planet's center of mass. So on a flat surface, we naturally stand up straight.
在我们地球上，重力会把我们拉向星球的质量中心，因此在平坦的地表，我们自然站得很直。
5·Gran Sasso and CERN are at different distances from the center of the Earth, so the force of gravity varies slightly between the two LABS.
由于格兰·萨索与欧洲核子研究中心，这两个位置离地球中心的距离并不一样，所以这两个实验室里的重力也稍许有所差别。
6·Ferrari put the motor, batteries and related electronics as low as possible in the car to keep the center of gravity low and preserve interior space.
法拉利公司尽可能让发动机、动力电池和相关电子设备重量减轻，使汽车保持低重心，车内的空间也不会减少。
7·The three-seater is lightweight with a low center of gravity and features a powerful electric motor that helps it deliver supercar performance.
这部三个座位的汽车很轻，重心较低，并有强大的电动发动机，有助于它发挥超级汽车的性能。
8·But if enough good ones do, it stops being a self-indulgent choice, because the center of gravity of Silicon Valley will shift there.
但是如果很多好的创业公司都这么做，就不再是个奢侈的标志了，因为硅谷的吸引力就将转移到那里去了。
9·If there are extra dimensions, then the gravity from the black hole in the center of our galaxy might dramatically brighten the images of stars beyond it.
如果有其他维度，那银河系中心的黑洞引力就可能使其外面的恒星影像异常明亮。
10·The first known use of "zero-gravity" is from Jack Binder (better known for his work as an artist) in 1938, and actually refers to the gravityless state of the center of the Earth's core.
1938年杰克·宾得（作为一个艺术家而闻名）第一次使用“零重力”，事实上是指地球核心的无重力状态。