My children are 18 months, 4 and 7 years old.

我的个三孩子分别是18个月，4岁和7岁。

youdao

They all used children, very young children, 6, 7 years old.

他们都使用了儿童，年级很小的儿童，只有六、七岁。

youdao

By the end of the study, when the children were 7 years old, 79 had been diagnosed with an ASD; 12,901 had not.

研究的后期，孩子们长到7岁的时候，79人被确诊患有自闭症；12901人没有患病。

youdao

The court granted her temporary custody of the children - two boys and a girl who range from 7 to 12 years old and set dates in July and August to take up the other questions.

VOA: standard.2009.06.29