Gargle and clean your teeth after eating persimmon lest the tannic acid, pectin and sugar damage your teeth.

吃完柿子记得刷牙漱口，以免柿子中的单宁酸、果胶和糖分，侵蚀牙齿。

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Potatoes are able to clean acid that can disrupt the performance of tryptophan in the body.

土豆可以清除那些在身体中扰乱色氨酸工作的酸。

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Seven years ago his father, Robert, produced a diamond in a high-pressure chamber of carbon gas and dropped it into an acid solution to clean it off.

七年前他的父亲罗伯特在一间高压碳气室中制造了一颗钻石，把它放入酸性溶液中清洗干净。

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This wiped clean the popular memory of fiery exchanges, interruptions and acid put downs that had defined the previous century.

CNN: Why should the press be polite to presidents?

During the administration of Bush I, the EPA suppressed the findings of a decade-long, half-billion-dollar study of acid rain NAPAP, the main scientific conclusion of which was that acid rain was not the culprit in increasing the acidity of lakes until after Congress passed Clean Air Act of 1990.

FORBES: The EPA: The Worst of Many Rogue Federal Agencies, Part II