舌头也要用牙刷清洁,并且经常漱口。
Use a toothbrush on your tongue as well, and rinse your mouth frequently.
目的:观察儿童使用声波震动牙刷清洁牙及控制菌斑的效果。
PURPOSE: to evaluate the efficacy of using sonic electric toothbrush to clean the teeth and control dental plaque in children.
妻子:现在是除夕,所有清洁用具都已经被收起来了,你来用牙刷清洁这儿,看看怎么样!
Wife : It's New Year's Eve and all the cleaning equipment has been put away. You try cleaning this place with a toothbrush.
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