Such an exercise lets them keep a clean machine while learning how the automobile engine works.

此类活动使他们能够在保持汽车清洁的同时，还了解了汽车引擎是如何工作的。

youdao

Such an exercise lets them keep a clean machine while learning how the automobile engine works.

此类活动使他们能够在保持汽车清洁的同时，还了解了汽车引擎是如何工作的。

youdao