如果一年不刷牙会怎样——第1级
09-11-2026 07:00
每天刷牙能保持口腔健康。如果你不再清洁口腔，有害细菌就会迅速繁殖。几天之内，你的牙龈就会开始出血并感到疼痛。
一个月后，细菌会在牙齿上钻出洞来。我们把这些洞称为蛀牙。如果你整整一年都不刷牙，牙齿可能会脱落。此外，细菌还会进入血液，导致心脏、大脑和身体生病。
每天刷牙两次可以保持口腔清洁，保护牙齿，并帮助你的身体保持强健和快乐。
你可以在第3级部分观看原版视频。
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如果不刷牙，你的牙龈、牙齿和身体会发生什么变化？
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How to improve your Chinese with Chinese in Levels:
Reading
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