他们的牙齿是平的。
The study cautioned children against eating too much chocolate, which may destroy their teeth.
这项研究警告孩子说不要吃太多巧克力，因为这可能毁掉他们的牙齿。
Among the 451 interviewed patients, 75％ reported no pain at all during their visits, including situations when they had their teeth pulled out.
在451名接受采访的患者中，75%的人表示在他们就诊期间没有任何疼痛，包括在拔牙的情况下。
The married women of Shitamachi maintained the custom of blackening their teeth.
下町的已婚妇女保留了染黑牙齿的习俗。
Pipe smokers sometimes wear down the tips of their teeth where they grip their pipes.
抽烟斗的人用牙齿咬住烟斗，有时会把牙齿尖磨平。
To avoid toothache, they had their teeth pulled out.
为了避免牙痛，他们把牙齿拔掉了。
They used lemon juice, salt or other things to clean their teeth.
他们用柠檬汁、盐或其他东西来清洁牙齿。
The dentist suggests that the girl should brush their teeth before going to bed.
牙医建议这个女孩在睡觉前刷牙。
During this month, people are made to think about the importance of brushing their teeth, eating less sweet foods and going to see the doctors from time to time.
在这个月里，人们要思考刷牙的重要性，少吃甜食，时常去看医生。
This is how crocodiles clean their teeth.
鳄鱼就是这样清洁牙齿的。
Are Asians more likely to floss their teeth?
亚洲人用牙线清洁牙齿的比例更高吗？
People there are used to brushing their teeth with sticks.
那里的人们习惯用棍子刷牙。
Do you know that most people do not brush their teeth in the right way?
你知道大多数人刷牙的方式不对吗？
In the south of Africa, some people brush their teeth with sticks first.
在非洲南部，有些人先用棍子刷牙。
Some people brush their teeth with sticks first according to the passage.
这篇文章说，有些人先用棍子刷牙。
A century ago, few people regularly brushed their teeth multiple times a day.
一个世纪以前，很少有人一天刷几次牙。
Africans keep a small stick in their mouth to chew or scrub their teeth all day.
非洲人整天把一根小木棍放在嘴里咀嚼或刷洗他们的牙齿。
All the students had their teeth X-rayed at the end of the first and second years.
所有的学生都在一年级和二年级结束时做了牙齿X 光检查。
The remaining 423 students merely cleaned their teeth when they went to bed and when they got up in the morning.
剩下的423名学生只在上床睡觉和早上起床的时候刷牙。
When someone neglects to brush their teeth, flush the toilet or wash their hands, a speaker can prompt them to do so.
当有人忘记刷牙、冲厕所或洗手时，扬声器可以提示他们去做这些事。
Some groups would get each other's attention by rapping branches with their knuckles, while others did it by loudly ripping leaves with their teeth.
一些群体会通过用指关节敲树枝的方式来互相博取关注，而另一些群体则是以大声撕咬叶子来吸引注意力。
They found that the average person's mind wandered most frequently about 65% of the time during personal activities, such as brushing their teeth and combing their hair.
他们发现，一般人在刷牙、梳头等个人活动中最常走神，约有65%的时间在走神。
523 students cleaned their teeth within ten minutes of eating when possible they used a toothbrush, when this was impossible they washed their mouth thoroughly with water.
523名学生在吃饭后十分钟内刷牙。如果情况允许的话，他们会使用牙刷；否则，他们会用水彻底清洗口腔。
523 students cleaned their teeth within ten minutes of eating. When possible, they used a toothbrush; when this was impossible, they washed their mouth thoroughly with water.
523名学生在吃饭后十分钟内刷牙。如果情况允许的话，他们会使用牙刷；否则，他们会用水彻底清洗口腔。
They are actually baring their teeth.
但实际上，他们只是不想露牙而已。
我看他们的牙齿。
The authorities, too, are baring their teeth.
权威部门也露出了他们的牙齿。
Passing sticks through their teeth is forbidden.
用棍棒穿过他们的牙齿是禁止的。
Most men know that brushing their teeth is important.
很多人都知道刷牙很重要。
Most men know that brushing their teeth is important.
很多人都知道刷牙很重要。
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