She had a happy childhood.

她有一个幸福的童年。

《牛津词典》

Except for her illnesses, she had a particularly happy childhood.

除了几场病痛之外，她有个特别快乐的童年。

《柯林斯英汉双解大词典》

They don't have a happy childhood - it's all about study and exams and after-school classes.

他们没有一个幸福快乐的童年-他们只有学习，考试和课后补习。

youdao

But he didn't have a happy childhood and has complained that his father didn't have time for him.

CNN: ASIANOW - TIME Asia | Japan: The Replacement Leader

In the suburban town of Rye, New York, she had a happy childhood.

WHITEHOUSE: Barbara Pierce Bush

She had a happy childhood, held multiple postgraduate degrees, and was newly married for the second time, with no children.

NPR: Waiting and Dreading: Families in War Time