首先，蓝源太空公司已经成功发射并且降落一架可以重复使用的火箭。这项创举将大幅压低太空旅行的成本。

First, Blue Origin has successfully launched and landed a reusable rocket. This will drastically reduce the cost of space travel.

youdao

首先，蓝源太空公司已经成功发射并且降落一架可以重复使用的火箭。

First, Blue Origin has successfully launched and landed a reusable rocket.

youdao

首先，蓝源太空公司已经成功发射并且降落一架可以重复使用的火箭。

First, Blue Origin has successfully launched and landed a reusable rocket.

youdao