It is the employer who must ensure that he can provide safe working conditions to all his employees.

这是谁，雇主必须确保他能提供安全的工作条件，他的所有员工。

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Timely monitor of their stress in each working conditions can ensure the safe of support and main arch circle with full-automatic data acquisition system.

使用全自动数据采集设备和处理系统，对每一工况下的支架、拱圈应力进行适时监控，确保了施工过程中支架和主拱圈的安全。

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Safe and healthy working conditions and living environment are necessary to ensure the health of employees, prevent any harm of occupational and other diseases to employees.

为职工提供安全、健康、卫生的工作条件和生活环境，保障职工职业健康，预防和减少职业病和其他疾病对职工的危害。

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Unions and their supporters counter that collective bargaining has helped ensure safe working conditions, fair treatment and wages and adequate health care.

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