When brushing your teeth, brush the back of your tongue, too, or scrape it with a tongue scraper.
刷牙时，还要刷刷舌根，或用刮舌器将舌头刮干净。
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Both front and back drum have scraper and water spray equipment.
前后振动轮均有刮泥和洒水装置；
应用推荐
模块上移
模块下移
不移动