全部

1·Do you know what a stationary satellite is?

你知道定位卫星是什么吗？

2·Engineers with aerospace giant Lockheed Martin want to send up astronauts into stationary orbit above Earth's best-known natural satellite to study it further.

而来自航空业巨头洛克希德马丁公司的工程师们则想把宇航员送到地球上空的最有名的天然卫星静止轨道再做深入的研究。