After all, they are learning in a safe and orderly environment.
毕竟，他们是在一个安全及有序的环境中学习。
The safe and orderly production of enterprises can not do without effective safety management.
企业生产的安全有序进行，离不开有效的安全管理。
The safe and orderly production of enterprises can not do without effective safety management.
企业生产的安全有序进行，离不开有效的安全管理。
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