Regular Toothbrushing

http://www.hopkinsdental.com/images/toothbrushing.gif

在一个从小要求高度重视清洁和个人卫生社会里，一天刷三次牙是

标准的美国习俗。这样可以确保牙齿和牙龈的长期健康。这种传统

更为明显地体现为人们每年都去看牙医，以使口腔保持最佳状态。

http://www.bradford.nhs.uk/NR/rdonlyres/426005BA-4313-4B70-9135-B021B7E03793/47786/dental.jpg

In a society where cleanliness and personal hygiene are stressed from early childhood，the practice of brushing three times a day is a standard American ritual. This repetitive behavior is designed to ensure the continuing health of the teeth and gums. The traditional character of this rite is evident in the patient's yearly visit to the dentist to maintain the optimum condition of the mouth.

http://www.drsfostersmith.com/images/articles/a_9310.jpg

小贴士

卫生：hygiene

牙龈：gum

最佳的：optimum

e.g: enjoy optimum economic conditions

        处于最佳经济状况

        the optimum temperature for the growth of plants

        植物生长的最佳温度OO