Three year gap

三岁一代───Three year olds;沟───ditch

In the first study, three-year-olds watch two videos shown side by side.───在第一项研究中，三岁的孩子们观看了并排播放的两段视频。

When we describe one as smart, it's shorthand for "smarter than other three year olds."───当我们说一个三岁小孩聪明，实际上不过是说他比其他三岁的小孩聪明。

For three-year-olds, for reasons that are still in need of clarification, no improvement—rather a slight drop in performance resulted from the change.───对于三岁的孩子来说，由于一些原因，他们的成绩并没有得到改善，只是因为改变而略有下降。

' Even the three-year-olds came back to me saying 'Gosh, you know everybody writes.───结果，有个刚刚三岁的孩子回来后跟我说‘天呐，你知道吗，每个人都会写字哎。

I'm always amazed -- three-year-olds know who Richard Serra is and take you to the galleries.───我对此一向非常吃惊。三岁的孩子知道RichardSerra是谁并且还会带你去艺术展览。

The questionnaire, assessing three-year-olds, focused on behavioural problems and attention deficit hyperactivity disorders.───这份评估3岁孩童的调查问卷，把注意力集中在行为问题和注意力缺陷多动障碍（AttentionDeficitHyperactivityDisorder，简称ADHD）上。