Known as "the kissing disease" since it is passed by close contact, this chronic condition is debilitating and may disrupt study.

这个病以“亲吻之病”闻名，因为它是通过亲密接触而传染的。这个慢性病会使人非常虚弱，可能会影响学习。

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There are lots of ways you can get gum disease, but you may not have known you can get it from kissing your dog too.

感染牙龈疾病的方式很多，但你也许不知道亲吻自家的狗狗也会感染吧。

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