工人们接受操作五十吨压土机和巨型起重机的训练。

Laborers were trained to handle 50 - ton compactors and giant cranes.

youdao

工人们接受操作五十吨压土机和巨型起重机的训练。

Laborers were trained to handle 50 - ton compactors and giant cranes.

youdao