less childish
小孩子气的
以上为机器翻译结果，长、整句建议使用 人工翻译 。
I'm older than he is, you know, and wiser: less childish, am I not?
我比他大，你知道，也聪明点，孩子气少些，不是吗？
youdao
Small prints are ideal for children's rooms because they are less sophisticated than larger prints without being childish.
WSJ: Silly Parent, Good Design Is for Kids | Living Well by Rita Konig
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