L1 is located inside Earth's orbit, about 1.5 million kilometers away from the planet.

L1 位于地球轨道内，距离地球约 150 万公里。

Because it is so far, it takes an incredibly long time to complete one orbit, about 165 years.

因为距离太阳太远，所以它绕太阳的公转周期也相当长，约需165年。

NASA plans to put them in a permanent Earth orbit, about 700 kilometers high, after the testing is complete.

NASA计划在测试结束后将这些仪器永久性地放置在地球轨道，大约距离地面700千米。

It'll carry a dummy payload weighing 1.5 tons, which is expected to enter orbit about 800 kilometers above earth.

它将携带重1.5吨的有效载荷模型，预计将进入距地球800公里的轨道。

To be habitable, we'd have to put our planet in orbit about one-and-a-half trillion kilometers away from UY Scuti.

要想适合人类居住，我们就必须把地球放到距离盾牌座 UY 1.5 万亿公里远的轨道上。

Webb will travel to an orbit about 1.6 million kilometers from Earth and undergo six months of commissioning in space.

韦伯将前往距离地球约 160 万公里的轨道，并在太空进行 6 个月的试运行。

Specifically, in a geosynchronous orbit about 35,000 kilometers above the Earth where its orbital period matches Earth’s rotational period.

具体来说，在地球上空约 35, 000 公里的地球同步轨道上，其轨道周期与地球的自转周期相匹配。

It took two tries to launch the second Gemini. By that time, the first one had been in orbit about eleven days.

发射第二颗双子星时，进行了两次尝试。那时，第一颗卫星已经在轨道上运行了大约11天。

It took two tries to launch the second Gemini. By that time, the first one had been in orbit about eleven days. Time was running out.

发射第二颗双子座尝试了两次。那时，第一颗已经在轨道上运行了大约11天，时间不多了。

For context, one astronomical unit is  the distance from the earth to the sun, so four hundred astronomical units is  about ten times the orbit of pluto.

就上下文而言， 一个天文单位是从地球到太阳的距离，因此四百个天文单位大约是冥王星轨道的十倍。