留美老师带你每日说英文 第470期:耳垢对耳朵的好处

 台湾籍旅美老师今天交给我们的句子是：

Now, your cerumen is protecting you from infection, lubricating¹ your ears, and it's keeping a health record for your doctor. But even knowing all of that, there are those of you who will totally wanna get rid of it.

现在，你的耳垢再保护你免受感染、润滑你的耳朵及为医生记录你的健康史。但即使知道这么多好处之后，还是有人千方百计地想要除掉耳屎。

1 lubricating   

润滑的

参考例句：

• Automotive-engine lubricating systems are of the pressure-feed type. 汽车发动机的润滑系统采用压力供给式。
• In the present chapter, the emphasis is mainly on lubricating oils for internal combustion engines. 本章着重讨论用于内燃机的润滑油。