He left home at the tender age of 15.

他15岁离家，还少不更事。

《牛津词典》

He took up the game at the tender age of seven.

他在7岁的小小年纪就开始从事这项运动。

《柯林斯英汉双解大词典》

I had heard that genius could show itself at an early age, so I was only slightly taken aback that I had achieved perfection at the tender age of 14.

我早就听说天赋可以在很小的时候就显露出来，所以对于自己在14岁就达到了完美，我只是略微吃了一惊。

youdao

Like many baby boomers I married too young, proposing at the tender age of 20.

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He founded the National Review for the conservative intelligentsia at the tender age of 29.

ECONOMIST: Lexington

At the tender age of 19, he moved from Panama to New York City to pursue modeling.

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