怀孕的母亲接触化学杀虫剂的剂量每增加10倍，那么她的孩子7岁时的智商会比平均智商降低超过5个点。
Every tenfold increase in a pregnant mother's pesticide exposure meant a more than 5-point drop in her child's IQ at age 7.
有科学家有预感，怀孕的妇女的饮食和对各种化学物质的接触会打开一些致命的基因而关闭其他一些基因。
Some scientists have a hunch that a pregnant woman’s diet and her exposure to various chemicals turn on some fetal genes and turn off others.
你的身体为了赶上怀孕期间扩大的血液容量，需要更多的这种化学元素。
Your body needs more of this mineral during pregnancy to keep up with your expanding blood volume.
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