BBC Learning English - Bad Breath 口臭

　　Feifei: 导致口臭的原因有很多种，比如喝水太少 low fluid intake.

　　Helen: Or sinus problems, problems with our nose.

　　Feifei: 鼻腔里的问题 sinus problems.

　　Helen: Or stress.

　　Feifei: 精神压力 stress.

　　Helen: These then can cause our body’s natural mouth wash, saliva, to dry up.

　　Feifei: 漱口水 mouth wash, 口水 saliva 是人体自然产生的漱口水，如果口水没了那么就可能引起口臭。 So what can we do to treat bad breath?

　　Helen: Dental hygienist Mhari says it’s all about cleaning our teeth properly.

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　　We should try and brush twice a day for at least two minutes, statistically we brush for 45 seconds on average, and we tend to brush the same way as we have done since we were about six years old. The real key to brushing well is to use small circular movements.

　　Feifei: 刚才我们听到的是 Mhari, 她是一名口腔清洁师 dental hygienist. 她说我们应该每天至少刷两次牙，每次2分钟。

　　Helen: We should brush our teeth twice a day for at least two minutes. But most of us only brush for 45 seconds on average.

　　Feifei: 不过 Mhari 说多数人每次只刷45秒钟， 所以时间上差很多。

　　Helen: Also, we tend to brush our teeth the same way since were six years old.

　　Feifei: 我们刷牙的动作从6岁后就没有改变过。

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