the hazards of childbirth.
分娩
险。
险；
；障碍（hazard复数）险；赌（hazard三单形式），自然风险确认；识别the hazards of childbirth.
分娩险。
Are you aware of the hazards of mountaineering?
你知道登山运动险吗?
The report was considered to be the last word on the hazards of smoking.
这篇报道被认为是给
定论
There are many hazards in a journey across Africa.
穿越非洲旅行有许多险。
Objective To summarize the radiation hazards to crew of space flight and advancement in research of radioprotector.
目综述国内外航天辐射及防护剂研究进展,提出加强防护剂研究建议。
In light of the hazards and uncertainties associated with subsurface waste disposal, deep well injection may create pollutional problems.
由于地表废水处置险性和不可靠性，深井注入也会产生污染。
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