人们宁愿饿死也不愿意靠面包和生胡萝卜过活。而奇特是，你越没有钱，你越不愿意把钱花在健康的食物上。

And the peculiar evil is this, that the less money you have, the less inclined you feel to spend it on wholesome food.

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原因：空气中悬浮的室温生细菌会落在你的食物上，“并且一个细菌能在几小时内增殖为百万个，”Draeger说。

Here's why: the ambient bacteria floating around in the air can land on your food, "and can go from one to one million in a matter of hours," Draeger says.

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多吃些松脆的食物可以有效地刮掉牙齿上的残留物，比如生的胡萝卜和芹菜，这类食物能清理掉牙齿上的残留物，轻轻地把牙齿清理干净。

Eat more foods, such as raw carrots and celery, that will work at clearing away bits stuck to your teeth, effectively gently scraping your teeth as you eat them.

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