Scientists have long sought to crack the genetic code of healthy aging.
科学家们一直在寻求破解健康长寿的基因密码。
In a circuit, check key check whether the insulation wiring occurs, aging, soften crack damage.
在检查电路时，应重点检查电线的绝缘层是否发生软化、老化、裂损。
At present, some Bridges appear aging, damage and crack for some reasons, such as design, construction, management, natural disasters and so on.
由于设计、施工、管理、环境腐蚀、自然灾害等原因，目前已有不少桥梁发生老化、破损、裂缝等现象。
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