Every time she lobs the ball at me, I find it more difficult to return .

她每次对我高击球，我就发现回球更加困难。

youdao

Return to difficult questions later if you have time.

如果最后还有时间的话再来做难题。

youdao

Qian reputation to give up money, after a difficult return to its motherland;

钱学森放弃名誉金钱，历经重重困难回到祖国的怀抱；

youdao

Qian reputation to give up money, after a difficult return to its motherland;

钱学森放弃名誉金钱，历经重重困难回到祖国的怀抱；

youdao