二恶英是一类剧毒物质，可导致生殖和发育问题，损害免疫系统，干扰激素，还可以导致癌症。
Dioxins are highly toxic and can cause reproductive and developmental problems, damage the immune system, interfere with hormones and also cause cancer.
科学家发现，下丘脑中有一种肽类物质叫做“黑色素聚集激素”或者“MCH”，在饥饿时期可以使生殖系统失去活性。
The scientists found that a peptide active in the hypothalamus called melanin-concentrating hormone or MCH can inactivate the reproductive system in times of hunger.
环境激素类邻苯二甲酸酯是一类重要的环境激素物质。
Environmental hormone phthalate esters are an important kind of environmental hormone.
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