The earth's gravity slows the moon's rotation, matching it to the speed of its orbit.
地球引力减缓了月球的自转速度，使之与其轨道的速度相匹配。
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。
Words like "acid", "gravity", "electricity" and "pendulum" had to be invented just to stop their meetings turning into an endless game of charades.
像“酸”，“重力”，“电”和“钟摆”这些词不得不被发明出来，只是为了防止他们的会议变成一场无止尽的字谜游戏。
On the other hand, a comparatively warm body with a small surface gravity, like Earth's moon, is unable to hold even the heaviest gas and thus lacks an atmosphere.
另一方面，像地球的卫星这种相对温暖、表面引力较小的天体，它们连最重的气体也无法容纳，因此也没有大气层。
More importantly, scientists are already queuing for seats on these low-gravity space-flight services so they can collect data during a few minutes of weightlessness.
更重要的是，科学家们已经在排队争取这些低重力太空飞行服务的座位了，这样他们就可以在几分钟的失重状态下收集数据。
One thing that physiologists have learned is that without gravity our bodies begin to lose strength, leaving astronauts with weakened bones, muscles and cardiovascular systems.
生理学家发现，失去重力后身体会失去力量，这使得宇航员骨质疏松、肌肉松弛，心血管功能也相应退化。
He was struggling to find the right equations that would describe his new concept of gravity, ones that would define how objects move through space and how space is curved by objects.
他一直在努力寻找合适的方程来描述他的新引力概念，这些方程将定义物体如何在空间中移动，以及物体是如何扭曲空间的。
Astronomers theorize that a black hole forms when a massive object shrinks catastrophically under its own gravity, leaving only a gravitational field so strong that nothing escapes it.
天文学家的理论是，当一个巨大的物体在其自身的引力作用下灾难性地收缩，只留下一个强大的引力场，且没有任何东西能逃脱时，黑洞就形成了。
All these vocational names carry with them a certain gravity and dignity, which descriptive names often lack.
所有这些职业名称都带有某种庄重和尊严，这是描述性名称所缺乏的。
They were asked to behave with the gravity that was appropriate in a court of law.
他们被要求在法庭上表现出应有的严肃态度。
On Earth, gravity helps a plant's stems and roots to find "up" and "down".
在地球上，重力有助于植物的茎“向上”生长，根“向下”生长。
After a year of research, the team came up with a gravity-driven hand-washing machine successfully.
经过一年的研究，该团队成功研制出了一种重力驱动的洗手机。
The moon's gravity is a sixth as strong as the earth's, so Chang'e-4's experiment was a test: would the earth plants know which way was up on the moon?
月球的引力是地球引力的六分之一，所以嫦娥四号的实验是一个测试：地球上的植物能知道月球上哪个是向上的方向吗？
The London market looks likely to defy gravity for a while longer
似乎伦敦房市将无视“地球引力”，继续“天价”一段时日。
Sir Isaac Newton supposedly discovered gravity through the fall of an apple.
据称艾萨克·牛顿爵士通过苹果落地，发现了万有引力。
The experiments help visualise how light travels in space warped by gravity.
实验有助于形象化地显示光在被引力所弯曲空间内的传播情况。
Relativity treats time and space and gravity as a smooth, unbroken continuum.
相对论则将时间、空间及重力看作光滑、不可分割的连续统一体。
Gravitational lensing occurs because gravity, as Einstein showed, bends light.
引力透镜效应(注2)的产生是因为引力会改变光路，正如爱因斯坦提出的那样。
Scientists attribute the phenomenon to dark energy, a force that repels gravity.
科学家将这个现象归因于暗能量——与万有引力相抵触的一种力。
My mother comes down reluctantly, not understanding the gravity of the situation.
妈妈满不情愿地走了下来，她并不清楚事情的严重性。
The crumpled leaf shape defies gravity, giving it the grace of a suspension bridge.
挑战重力的曲折叶形令这把椅子有着凌空一桥飞架般的优雅姿态。
IN VIRTUAL worlds you may be able to fly, but the laws of economic gravity still apply.
在虚拟世界中虽然人可以自由飞翔，但是经济规律却依然存在。
I leap, I spin, I navigate the circumference of each spherical planet, toying with gravity.
我跳起来，旋转，绕着每个星球的圆周行进，玩笑般的对付着地心引力。
Atmospheric gravity waves form when buoyancy pushes air up, and gravity pulls it back down.
当浮力把空气向上推，而重力又把它向下拉的时候，就会形成大气的重力波。
Named MACS J1149.5 + 2223, the cluster is massive and its gravity magnifies the distant galaxy.
这个编号为MACS J 1149.5 + 2223的星团质量很大，它(通过引力透镜效应)把这个遥远的星系放大了。
Within the cloud, some parts are sufficiently dense to start collapsing under their own gravity.
在星云里面，某些部分足够致密而在自身重力影响下开始塌缩。
Dark energy creates a repulsive force that counters gravity and is now tearing apart space-time.
暗能量产生一种与万有引力相反的排斥力，这种排斥力推动着宇宙膨胀。
Such theories could also explain why gravity is so weak compared with the other fundamental forces.
这些理论也可以解释为什么与其他的基本力相比，引力竟是如此之弱。
Nothing can escape a black hole's gravity because nothing can travel faster than the speed of light.
任何东西都不能逃脱黑洞的引力，因为没有任何东西的速度能超过光速。
Nothing can escape a black hole's gravity because nothing can travel faster than the speed of light.
任何东西都不能逃脱黑洞的引力，因为没有任何东西的速度能超过光速。
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