刷牙时用英语怎么说怎么写

刷牙在英语中的表达方式是 "to brush one's teeth"。这个短语的来源可能源自人们用牙刷和牙膏清洁牙齿的日常生活习惯。
例句：
I brush my teeth twice a day, in the morning and at night. 我每天早晚刷两次牙。
Don't forget to brush your teeth before you go to bed. 别忘了睡觉前刷牙。
It's important to brush your teeth thoroughly to keep them healthy and clean. 彻底刷牙对牙齿健康很重要。