To set up a specialized agency of the witness security protection after the protection period should be extended to up to remove the hazard.
须设立证人安全保护的专门机构，保护期限应延伸至事后保护，直至危险消除。
The ratio of net radiation over rainfall for a given period of time is a measure of excess energy relative to available water and is therefore a measure of drought hazard.
根据一定时间间隔的净辐射与降雨量的比可以用来衡量相对于可利用水分的剩余能量，因此该比值也是干旱灾害的度量。
Let the period be remembered as an admonition and not as an encouragement, in any section of the Union, to make experiments where experiments are fraught with such fearful hazard.
让我们记住那一时期且作为训诫，而非作为鼓励在联邦的任何地方，做出充满可怕危险的试验。
Groundwater hazard is a main kind of geological hazard during the period of mine constructing.
建井期间，地下水害是煤矿地质灾害的主要类型之一。
Groundwater hazard is a main kind of geological hazard during the period of mine constructing.
建井期间，地下水害是煤矿地质灾害的主要类型之一。
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