For example, in looking at survey data on the health behavior of middle and high school students, the factor I found that best predicted whether or not a kid was obese was tooth brushing.

譬如说，在观察了一份有关中学生和大学生健康行为的调查后，我发现一个孩子是否肥胖的最佳预知方法是看刷牙。

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But her healthful habits have been known to come up against her strong sweet tooth — especially in the middle of the night.

但是她健康的饮食习惯提醒着她不该吃这些甜食，特别是在夜深人静时候。

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The study shows that the stress in tooth middle is larger than that in tooth root with big spiral Angle and light load.

研究表明，大螺旋角或小载荷时，齿腰应力大于齿根应力。

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