9岁儿童英文怎么说

9岁儿童英语可以用"nine-year-old child"或"nine-year-old"来表示。这个短语的来源是根据儿童的年龄来描述的。

例句：

My nine-year-old son is very curious about the world around him. 我的九岁儿子对周围的世界非常好奇。
The nine-year-old girl was very excited to go to her first sleepover. 这个九岁的女孩非常兴奋可以参加她第一次宿舍聚会。
The nine-year-old child was very shy, but he eventually warmed up to his new classmates. 这个九岁的儿童很害羞，但最终和他的新同学打成了一片。