单词意思：
brush teeth
单词例句：
In the morning, we should wash faces and brush teeth、
每天晨起，一定要洗脸，并且刷牙漱口。
You don't brush teeth and wash faces before breakfast、
吃早饭前你不刷牙也不洗脸。
He goes to his bathroom to brush teeth and wash his face、
然后去他的浴室里去刷牙洗脸。
Tom thinks it unnecessary to brush teeth three times a day 、
汤姆认为一天刷三次牙是没有必要的。
Brush teeth daily, preferably after each meal or twice a day、
每日刷牙，最好每次饭后或一天两次。
