This period may, however, be shortened in cases where urgent problems of safety, health or environment arise or threaten to arise.
但在出现有关安全、健康或环境的紧急问题或出现此种威胁的情况下，上述期限可以缩短。
The world auto industries are facing more and more serious problems: energy, environment and safety.
世界汽车工业正面临着越来越严峻的问题：能源、环境和安全。
In addition, it will work many community problems, such as environment and traffic safety and etc.
此外，废旧汽车报废处理不当，也会造成环境和交通安全等一系列社会问题。
This text recommended the concept of the safety of information, and the problems which it would solved under the environment of the network.
本文介绍了网络环境下信息安全的概念和所要解决的问题。
In order to solve the safety problems incurred by the dynamic and uncertainty of grid environment, we introduce the trust computation mechanism.
了解决网格环境的动态性和不确定性所带来的安全问题，我们引入了信任机制。
Entering the new century, our country faces various problems such as natural disaster, biological invasions, shortage of resources, environment pollution, food safety and diseases spread and so on.
进入新世纪，我国面临自然灾害、生物入侵、资源短缺、环境污染、食物安全和疾病传播等多方面的问题。
Unfortunately, the conventional methods suffer from the use of volatile, foul-smelling, low molecular weight thiols that can lead to serious safety and environment problems.
然而，分子量较小的硫醇易挥发、易燃、具有恶臭气味、有毒，不仅对环境造成污染，而且危害使用者的健康。
Unfortunately, the conventional methods suffer from the use of volatile, foul-smelling, low molecular weight thiols that can lead to serious safety and environment problems.
然而，分子量较小的硫醇易挥发、易燃、具有恶臭气味、有毒，不仅对环境造成污染，而且危害使用者的健康。
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