同时，在这一年龄段中97%的受访者表示无法想象没有手机的生活。

Living without a mobile phone was also unthinkable for 97 percent of those questioned in that age range.

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在这一年龄群中，有孩子的管理工作者更容易遭受睡眠不足的折磨。

Among that age group, people with young children and managerial jobs were most likely to suffer.

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假如母亲在15 - 20岁之间怀孕，那么她的女儿也很可能在这一年龄怀孕。

If a mother was a teen parent, the teenage daughter is more likely to become pregnant as a teen herself.

youdao

And his discoveries that-- they did them in different ways at different ages led to the emergence of the Stage Theory.

他发现,儿童在不同的年龄拥有不同的行为方式,他根据这一发现提出了阶段理论

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