他几乎不懂数学，更不用说化学了。
He knows little of mathematics, and still less of chemistry.
先生们，我的父亲从来就嫌弃我，因为我不懂数学。
Gentlemen, my father always detested me because I could not understand mathematics.
他说不会阅读的人或不懂数学的人都可以使用手机。
He says a person does not have to be able to read or know mathematics to use such devices.
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