have a good head on one's shoulders (拥有一个好的头脑)

Idiom Intelligence

含义

to be sensible and intelligent

理智且聪明 (lǐzhì qiě cōngmíng)

例句

"She’s only 20, but she has a good head on her shoulders."

"她只有20岁,但她有一个好的头脑。" (Tā zhǐyǒu 20 suì, dàn tā **yǒu yīgè hǎo de tóunǎo**.)