They learn about everything from safety and labor relations to cost control and rework prevention.

学习的内容涵盖一切，如安全，员工关系，成本控制和返工预防。

youdao

They learn about everything from safety and labor relations to cost control and rework prevention.

学习的内容涵盖一切，如安全，员工关系，成本控制和返工预防。

youdao