Then, on the human body safety is decidedly no guarantee, so, the pipeline must be done fine. What should we do if the ventilation pipe is damaged?
那么，对人体的安全就决然没有了保障，所以，管道是一定要做的精致。
Because arsenic is a carcinogenic chemical for human and associating with more diseases, the arsenic health standard in drinking water should be revised to low limit for human body safety.
由于砷化物己确定为人类致癌物，且与其它一些疾病相联系，需要研究修订出更安全又可行的饮水砷卫生标准。
The plan of the factory service should be able to meet the characteristics of the work, to protect the safety and health of the human body.
厂服的计划要能够符合工作的特性，为保护人体安全和健康效力。
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