The skull bones fuse between the ages of fifteen and twenty-five.

颅骨在15和25岁之间长合。

《柯林斯英汉双解大词典》

Earlier studies indicated that very young school children aged between 5 and 7 showed no bias in choosing musical instruments, but their tastes become more clear between the ages of 8 and 10.

早期的研究表明，年龄在5到7岁之间的在校儿童在选择乐器方面没有偏见，但他们的喜好在8到10岁之间变得更加清晰。

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Children must attend school between the ages of 5 and 16.

5到16岁的孩子必须上学。

《牛津词典》

The study centered on couples between the ages of thirty and forty-four who were born in the United States.

VOA: special.2010.02.19

My bid concern is that you have this huge group of people on the planet 2 young people between ages of say 12 and 19 or 21 or 22 all asking the question: Who am I?

我最关注的是,我们在世界上拥有如此巨大的一个群体,即年龄介于12到19岁，或者21，22岁的青年人2,都在问一个问题：,我是谁？

普林斯顿公开课 - 人性课程节选

The key line in the society of the Dark Ages appears to be certainly not between monarchy and everybody else, but between nobility and commoners.

黑暗时代的社会中,最重要的主线,显然不是君主阶级和平民们之间,而是贵族和平民之间

耶鲁公开课 - 古希腊历史简介课程节选

Of adults between the ages of 25 and 29, nearly half live in homes without landline phones.

FORBES: The Young Aren't The Only Ones Going Wireless

The researchers carried out a survey of 853 women between the ages of 20 and 65.

BBC: 'No sex please, we're too busy'

Roughly 70, 000 Americans between the ages of 18 and 39 are diagnosed with cancer each year.

FORBES: First Descents: Cancer Camp For Young Adults