安全工程专业英语
Translation -paragraph 3For each life-cycle phase, the hazards should be assessed and controlled. 在每一个生命周期阶段，必须对危害进行评价和控 制。 The earlier in the life cycle this is done, the cheaper it is to accomplish. 在生命周期过程中这一工作做得越早，完成它所需 的成本就越低。
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