氯苯类有机物在环境中广泛存在，由于其具有不同程度的毒性，生物累积性和持久性，对环境和人畜健康具有潜在危害。
Chlorobenzene is existed in environment, is one kind of pollution with more toxicity and bioaccumulation and persistence, had more harmful to the health of people and livestock.
它们锐减的原因还不确定，不过有可能是环境污染物，比如说农药，通过它们高渗透性的皮肤来危害这些生物。
The reasons for their decline is unknown, but it's likely environmental contaminants such as pesticides are harming the creatures via their highly permeable skin, he said.
本文讨论了内分泌干扰物对于水生生物的危害。
This essay mainly discusses the effects of endocrine-disruptors on aquatic animals.
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