That's absolutely true, and there's no such thing as pure food.

没错， 而且这里没有一种东西是纯正的食物。

In 1906, the U.S. government enacted or made into law, the pure food and drug act.

1906 年，美国政府颁布或制定了《纯食品和药品法》。

They took an interest in legislation pertaining to prisons, pure food, public health, and municipal government, among other things.

他们对与监狱、纯净食品、公共卫生和市政府等有关的立法感兴趣。

Two important pure food and drug laws, enacted during the same year, were designed to protect the public against diseased meats and deleterious foods and drugs.

同年颁布的两项重要的纯食品和药品法旨在保护公众免受病肉和有害食品和药品的侵害。