虽然导致口臭的原因可以归咎于象大蒜这样的食物，又或者是因为牙龈发炎，但是最为常见的口臭原因是在于，口腔和喉咙内的细菌过渡滋长。

WHILE foods such as garlic can be the culprit, as can a tooth infection, the most common cause of bad breath (halitosis) is an overgrowth of the bacteria which normally live in the mouth or throat.

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本文以大蒜根尖为材料，在传统制片法的基础上加以改进，获得了大量植物细胞有丝分裂的清晰图象。

This paper is about the root ends of garlic. On the basis of improving the traditional ways of making slices, we have got a large number of clear pictures about the mitosis of plant cells.

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