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an result in yellowing teeth – because the acid strips the enamel and starts to reveal darkercoloured dentine underneath. It is not a ?mon problem, but may be an issue for regular swimmers who spend a long time in the pool each day.’ “此外氯還會導致一口黃牙,因為酸性物會剝蝕掉釉質(zhì),致使后層顏色較深的牙質(zhì)顯露出來。盡管這不算是普遍問題,但對于那些每天都泡在游泳池的人來說,這個問題不容忽視?!?br />REDUCE THE RISK: Try to keep your mouth closed while swimming. Don’t brush your teeth straight after your dip because at this time the surface of the teeth could be softened by the acidic chlorine and could be more easily brushed away. 如何補救:游泳時緊閉嘴唇,游完之后不要立即刷牙,因為這時牙表面可能正好被酸性的氯軟化了,這樣釉質(zhì)會被輕易地刷掉。 內(nèi)容總結(jié) (1)保護牙齒切莫進入誤區(qū) So you brush your teeth after every meal, choose herbal tea over fizzy drinks, and snack on fruit not sweets. (2)其實,有這些習慣的人更有可能長蛀牙 (3)” 2016全新精品資料全新公文范文全程指導寫作 –獨家原創(chuàng) 6 / 6