Gases can do work while expanding.

气体在膨胀时做功。

youdao

They are building a new factory while expanding the old one.

他们一面扩建旧厂，一面建设新厂。

youdao

All the while, BarCap was expanding rapidly.

巴克莱资本一直在迅速扩张。

youdao

All the while, BarCap was expanding rapidly.

巴克莱资本一直在迅速扩张。

youdao