但是相比太空飞船，卫星着陆时需要相对小的速度，这将需要三天的时间，意味着消耗更少的燃料进入绕月轨道。

But the satellites will arrive with less relative speed than spacecraft making the trip in three days, which means less fuel will be needed to brake and drop into lunar orbit.

youdao

我现在要进入一个椭圆形轨道，因为新的速度已经，不是圆形轨道中的速度。

I now go into an elliptical orbit because the new velocity is no longer the right velocity for a circular orbit.

youdao

在这个方案中，一个载物飞行器(比如说搭载着卫星)将(首先)搭载超燃冲压发动机进入相当高度，理论上能够达到近似轨道速度。

In such a scheme, a payload vehicle (holding, say, a satellite) would piggyback to high altitude aboard the scramjet, which in theory could reach near-orbital speeds.

youdao