铅作为中枢神经毒物，对儿童的健康和智能的危害更严重。
The harm of lead on childrens growth and intelligence behavior is more serious.
是那如同它可以，神经毒物迅速做它的生意与人比血液毒物。
Be that as it may, the nerve poison does its business with man far more quickly than the blood poison.
据说神经毒物是原始的二，血液毒物是，亦所谓，一个新产品从一个改善的惯例。
It is said that the nerve poison is the more primitive of the two, that the blood poison is, so to speak, a new product from an improved formula.
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