She's tall for her age.
从她这个年龄看她个子算是高的。
《牛津词典》
He is tall for his age.
就他的年龄来说，他是高个的。
youdao
就他的年龄而言，他是个高个子。
He was tall for his age.
以他的年龄来说他的个子是很高的。
Exactly. He looks tall for his age.
的确如此啊，像他这个年龄，个子是够高的了。
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