My 5 -year-old started painting 我5岁开始画画
a 5-year-old child 一个5岁的小孩
children under 5-year-old 岁以下儿童
5 year old
5岁
以上为机器翻译结果，长、整句建议使用 人工翻译 。
youdao
I have a 7-year-old daughter, and a 5-year-old son.
我有一个7岁的女儿和一个5岁的儿子。
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模块上移
模块下移
不移动