One company selling hydrochloric acid for etching cement floors reckoned that, because it was in gel form and could legally be washed down the drain, the product was environmentally friendly.

一家销售蚀刻水泥地盐酸的公司以为盐酸为胶液产品，可以被合法地冲进下水道，因此是环保产品。

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For a classic look, pair a black jacket (like Sarah Jessica Parker's velvet number) with dark denim or a bright white tuxedo design (like Gwyneth Paltrow's) with a lighter or acid-washed pair.

经典的搭配是，黑色的外衣加深色的牛仔（如莎拉·杰西卡·帕克）或者亮白色的小礼服（例如）配更淡的裤子。

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The loaded resin is backflushed with water, eluted with acid, regenerated with base, washed with water, and then returned to the adsorption column.

饱和树脂在专门设计的填充塔内进行水反冲洗、酸淋洗、碱再生以及水洗等处理后再返回吸附塔。

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You're as likely to see someone rocking the heavy raw denim popular among '60s bikers and rebellious youth, an '80s-inspired high-waisted, flower print, or the acid-washed, ripped-up grunge look of the '90s.

CNN: Happy Birthday, blue jeans! We made you this photo album