本课题只对管道的衰老期进行风险分析研究。
This task merely analyses the underground gas pipeline death stage and carries on risk analysis research.
体育锻炼可以减少人们过早进入衰老期的危险。
Doing exercise can decrease the danger of coming to the period of decline too early.
体育锻炼可以减少人们过早进入衰老期的危险。
Doing exercise will lessen the danger of coming to the period of decline too early.
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