随着一级空火箭和一个月球探测器分别撞击到月球表面不同的两座环形山上，美国航空航天局（NASA）的大型“双重撞月”行动在今天早晨取得了成功。

NASA's double sledgehammer shot to the moon succeeded early this morning when an empty rocket stage and a lunar probe each crashed into separate craters.

youdao

在过去的20亿年来，许多小行星和彗星撞击月球，留下撞痕，并在月球表面上遗留下大约10000亿吨水。

In the past 2bn years, asteroids and comets have ploughed into the moon, dumping an estimated ten thousand billion tonnes of water onto its surface.

youdao

空间站在过去曾经被一些很小的碎片击中过。但是这些撞击只是引起很小的损坏。大多数只是撞向空间站的太阳能板。

The space station has been hit in the past by very small debris. But these strikes caused little damage, mostly to the station's solar energy collectors.

youdao