A NASA satellite orbiting over Portugal took photographs that reveal the effects of pollution from ships.

葡萄牙上空运行的一颗美航天局卫星拍摄的照片揭示了船舶污染的影响。

So we need to turn low earth orbit over to the commercial sector and then we become a customer.

所以我们需要把近地轨道转移到商业领域，这样一来我们就成了客户。

So we need to turn lower earth orbit over to the commercial sector and then we become a customer.

因此，我们需要把低地球轨道交给商业部门，然后我们成为一个客户。

Maintaining a stable orbit over a specific spot on Earth.

在地球上的特定地点保持稳定的轨道。

ALEX GOLDMARK: So you've got this plane flying just below the clouds, doing an orbit over Fallujah.

亚历克斯·戈德马克：这架飞机在云层下方飞行，在费卢杰上空绕轨道飞行。

Various spacecraft at NASA and the European Space Agency had in orbit over Mars were set to fly over the rover and check up on its health.

美国宇航局和欧洲航天局的各种航天器都运行到了火星轨道上，随时准备飞去检查探测车的运行状态。

Researchers are working to reduce these threats Last year, commercial companies, military and civil departments and amateurs sent more than 400 satellites into orbit, over four times the yearly average in the previous decade.

研究人员正在努力减少这些威胁。去年，商业公司、军事和民用部门以及业余爱好者将 400 多颗卫星送入轨道，这一数字是过去十年年平均水平的四倍多。