When toothbrushes are stored in close together and touching in a tooth mug, the germs can pass from one to another, leading to the risk of cross contamination.
如果大家的牙刷都放到一个漱口杯里并且有所接触的话，细菌就会在牙刷之间相互传播，导致交叉感染。
When toothbrushes are stored in close together and touching in a tooth mug, the germs can pass from one to another, leading to the risk of cross contamination.
如果大家的牙刷都放到一个漱口杯里并且有所接触的话，细菌就会在牙刷之间相互传播，导致交叉感染。
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