Ten year-olds are incredibly energetic.
10岁的孩子精力非常旺盛。
The teachers say the tests for 14-year-olds are misconceived.
老师们说这些测试不适合14岁的孩子。
A high proportion of five-year-olds have teeth in poor condition.
五岁儿童牙齿不健康的比例高。
Up to two thirds of 14 to 16 year olds admit to buying alcohol illegally.
14至16岁的少年中有多达2/3的少年承认非法买过酒。
Their range of leisurewear is aimed at fashion-conscious 13 to 25 year-olds.
他们的休闲服系列瞄准的是关注时尚的13到25岁的人群。
The state should move toward the goal of preschool for all 3- and 4-year-olds.
国家应朝着为所有三到四岁儿童开办学前学校的目标努力。
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。
Telling such stories to two year olds does not seem to produce long-lasting verbalizable memories.
给两岁的孩子讲这些故事似乎并不能使他们形成可以用语言表达的持久性记忆。
Finland provides three years of maternity leave and subsidized day care to parents, and preschool for all five-year-olds.
芬兰为父母提供3年的产假和日托补贴，并为所有5岁儿童提供学前教育。
Contraction of front and side parts as cells die off was observed in some subjects in their thirties, but it was still not evident in some sixty and seventy-year-olds.
随着细胞的死亡，有些人大脑前部和侧部的收缩，在三十多岁时就能观察到，但是也有些人直到六七十岁依然不明显。
A quarter of 4-year-olds frequently wet the bed.
4岁的孩子中有1/4经常性尿床。
Snow Puppies is a ski school for 3 to 6-year-olds.
“雪小狗”是一所为3至6岁的儿童开办的滑雪学校。
Their imaginations are quite something for 2 yr. olds.
他们的想像力对于2岁的孩子而言真是了不起的东西。
More than a quarter of seven-year-olds cannot add properly.
超过1/4的7岁儿童不会正确地做加法。
Eighteen percent of 30-year-olds claim they are workaholics.
18％的30岁的人声称他们是工作狂。
It was a challenge, keeping ten boisterous seven-year-olds amused.
要逗着十个好动的七岁孩子玩真是一种挑战。
18-year-olds are sent reminders that they should register to vote.
给18岁的人派送了通知单，提醒他们应该登记投票。
He suggested a link between class size and test results of seven-year-olds.
他建议把7岁儿童的班级大小和考试结果相关联。
Their work shows that one-year-olds are much more likely to have allergies if either parent smokes.
他们的研究显示，如果父母任何一方吸烟，1岁的婴儿更有可能患过敏。
What does David Lancy say about 18-month-olds?
大卫·兰西是怎么评价18个月大的婴儿的？
"Six-year-olds have to play with their friends," says Dr. Brian Wood.
“六岁的孩子必须和他们的朋友一起玩。”布赖恩·伍德博士说。
Five to nine-year-olds are the most likely to put things in their ears.
5到9岁的孩子最有可能把东西塞进耳朵里。
Five to nine-year-olds are the most likely to put things in their ears.
5到9岁的孩子最有可能把东西塞进耳朵里。
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