本集核心英语单词及例句：

1.exist (vi.)存在；生存；生活
He thought that if he couldn't see something, it didn't exist.
他认为自己看不见的东西就不存在。

2.wide (adj.)宽的；广阔的
Countertops should be wide enough to allow plenty of space for food preparation.
所有的厨房操作台都应该足够宽大，为制作食物提供足够的空间。

3.glottis (n.)声门
Comparative study on airway mucosa injury by two kinds of suction under glottis.
两种声门下吸引法对气道黏膜损伤的比较研究。

4.garbage (n.)垃圾
A bomb planted in a garbage can exploded early today.
今天早些时候，放在垃圾箱里的一枚炸弹爆炸了。

5.recycle (vt.)回收利用
The objective is to recycle 98 percent of all domestic waste.
目标是对98%的生活垃圾进行回收利用。