英语新闻听写 牙刷勤更换

（单词翻译）

New York City dentist, Keith Arbeitman states that most people aren't changing their toothbrushes enough.

纽约牙医基思·阿贝特曼说，大多数人更换牙刷的频率都不够。

It is suggested that every three months a toothbrush should be replaced.

建议每三个月更换一次牙刷。

Arbeitman explains, "It really depends how often you use your toothbrush.

阿贝特曼解释说：“这其实取决于你用牙刷的频率。

Once the bristles¹ start to bend, you're not really cleaning as effectively."

一旦刷毛开始弯曲，就不能有效地清洁牙齿。”

He says you can check when your brush is ready to exchange by licking² your teeth after you brush them.

他说，刷牙后，你可以舔舔牙检查牙刷是不是该换了。

If they aren't sleek³ and smooth than it's time to replace your toothbrush.

如果牙不光滑，那就更换牙刷。