In the process of making jeans, denim is treated with many types of man-made chemicals.

在制作牛仔裤的过程中，牛仔布要经过多种人造化学物质的处理。

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These man-made chemicals were used in many industries until 1977, when they were banned.

这些人造化学品被用于许多行业中，直到1977年才被禁止使用。

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Except that a couple of the originals have disappeared from sale, apparently unable to provide sufficient SPF without help from man-made chemicals.

现在，有几种天然防晒成分已经买不到了，而只用人工合成化学物质显然是没法达到足够的防晒指数的。

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Because of the ubiquity of man-made chemicals, the proposals affect an unusually large number of businesses in Europe and beyond.

ECONOMIST: Red tape in Europe

Carson elevated the consciousness of society about the ravages of man-made chemicals and gave birth to an environmental movement I am sure she never dreamed possible.

FORBES: Connect

Organically grown broccoli and coffee are full of natural substances that are just as carcinogenic as man-made chemicals at high doses and just as safe at low doses.

ECONOMIST: Plenty of gloom