地下建筑发生火灾时，烟气对人员的危害十分巨大。
The smoke will cause much damage to people when a fire breaks in an underground building.
可能这些变化看起来微不足道，但研究人员提出，这是环境污染对男性生殖系统所造成的危害的一种表现。
The changes may seem small, but the study authors suspect they are one manifestation of the effects of environmental pollutants on the male reproductive system.
研究人员企图更深入的理解与抗抑郁药物有关的、药物对孕妇、胎儿的危害以及帮助患者和医生作出个性化的决定。
Researchers struggle to better understand therisks associated with antidepressant medications to pregnantwomen and unborn children and help patients and physicians makeindividualized decisions.
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