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1·The earth point faults of direct current feed lines are localized with testing of leak current.

基于对地直流泄漏电流的检测来确定馈电支路的接地故障。

2·If we look at a star in January—when Earth is at one point in its orbit—it will seem to be in a different position from where it appears six months later.

如果我们在一月份观察一颗恒星——那时地球在其轨道上的一个点——它的位置似乎会与六个月后它出现的位置不同。

3·Eleven point two kilometers per second, at which satellites can be freed from the gravitation of the earth, is called escape speed.

卫星以11.2千米每秒的速度前进可以脱离地球引力，这被称为“逃逸速度”。

4·The Earth was such an active thing in its early history that it could have been there and degassed to the point that you can't see it anymore.

地球在其早期历史中是一个如此活跃的物体，以至于它能够就在那儿，然后消除某个点，然后你再也看不到这些东西。

5·Yet if it was even slightly obvious which direction Earth was, everyone would point their feet in that direction.

然而如果地球的方向甚至稍微有些清晰，每个人都会把脚指向那个方向。

6·The cable would connect with some point on Earth located at the equator, and would allow mass to be transferred to orbit using electricity instead of rocket fuel.

该电缆将连接一些位于地球赤道上的点，这将允许群众被运送到到轨道使用电来代替火箭燃料。

7·From the Moon, Earth is an ideal reference point to calibrate the cameras.

从月球的角度，地球是一个理想的校准相机的参照点。

8·If the sun were just a tiny point of light and Earth had no atmosphere, then day and night would each be exactly 12 hours long on a spring equinox day.

如果太阳只发出很小一点的光，并且地球周围不存在大气层，那么在春分这天，昼夜等长，都是12个小时。

9·Day and night would each be exactly 12 hours long on a spring or fall equinox only if the sun were a single point of light and Earth had no atmosphere.

如果想要昼夜在春秋分日达到精确地12小时等长，除非太阳是个单点光源或者地球上没有大气层。

10·It has reached the point where this oval orbit is nearest to the Earth.

最近，月球到达了离地最近的椭圆轨道点上。