The element(s) of an activity that has a potential to harm is considered its hazard(s).
可能造成伤害的活动的要素被视作危险。
Engineering seismic hazard analysis for a specified site represents an essential element of seismic safety assessment, and provides engineers with the standards of protection against earthquakes.
对工程场地的地震危险性分析是地震安全性评价的主要方法，并且为工程师提供抗震参数。
The element can be very soluble in water and moves easily through the environment when in certain forms, so it is considered a significant environmental hazard.
该元素易溶于水，当以某些形态存在时，很容易在环境中流转，因此它被认为是一个重大的环境危害。
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