toothpastes的翻译，读音

词态

短句

例句

toothpastes and mouthwashes are good sources of fluoride. 牙膏和漱口水是氟的良好来源。

toothpastes that promise whitening or gum health are another. 美白功能的牙膏和保健口香糖是另外的反例。

In most toothpastes and many water supplies, we use tiny amounts of fluoride. 在大部分的牙膏和自来水中，我们添加了少量的氟化物。

toothpastes containing either of these F sources are both safe and effective against caries. 含有上述浓度氟化物的牙膏能够安全有效的帮助预防龋齿. 。

Whitening toothpastes will remove only surface stains, such as those caused by smoking, tea or coffee. 增白牙膏将可以去除牙齿表面色斑，比如由吸烟，喝茶或咖啡引起来的。