produce man-made chemicals 生产人造化学品
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。
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。
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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