Mr. Lele said the most significant aspect of the Chang'e 2 mission was the attempt at a 9.5-mile-high orbit, a difficult feat.

拉勒说嫦娥二号的此次任务意义最为重大之处在于它将下降至9.5英里高的月球轨道上，这是难度很大的成就。

youdao

Their mission was to destroy the shield generator that protected the second Death Star high in orbit.

他们的任务是摧毁保护轨道上第二颗死星的护盾发生器。

youdao

The 13-tonne mission was initially lifted into a 350km-high orbit above Earth, with the expectation that the probe's big engine would fire twice - first, to raise that orbit, and, second, to set course for Mars.

BBC: Signal picked up from Russia's stranded Mars probe