这项研究跟踪调查了这些十几岁男孩们的生活。

The study followed the lives of these teenager boys.

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极有可能这些十几岁的青年已经修了司机教育课程，而事故完全是不可避免的，或者完全是其他司机的责任。

It is entirely possible that these teenagers had already had the driver's education courses, and that the accidents were simply unavoidable or even the other driver's fault.

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你可以等到孩子十几岁再教他们这些知识，这是一个很好的机会来展示为什么他们需要了解数学基础知识。

You could wait until teenage years to do something like this - but it's a good thing because this shows them why basic math is necessary.

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the first was it didn't bother with the established baseline of what percentage of teenage girls had received an unwelcome sexual advance in the day to day actions with people.

第一个问题是,它并没有涉及到底量度的基准,到底这些十几岁的女孩子们,在白天与人正常交往的时候,所受到的性挑逗的比例为多少。

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