youdao

Not stupid, but not smart enough.

虽不愚蠢，但也不够高明。

youdao

oh I could never wear that, and I’m not smart enough.

唉，我真不该穿那件衣服； 我不够聪明......

youdao

Okay, well, let's say for argument's sakethat I'm not smart.

VOA: standard.other

It's like they're not smart enough to figure out that it's not there anymore, even if they see it move.

好像他们还不够聪明,不能明白,物体已经不在那里了,即使他们看到物体被拿走了

耶鲁公开课 - 心理学导论课程节选

But if you're not smart about it, things can happen.

但如果你不够聪明，就会出事了。

大城市是否危险？ - SpeakingMax英语口语达人

All kids are not educationally pure but that does mean they are not smart.

FORBES: Diane Ravitch On How To Fix K-12

But letting deal fatigue block the clarity of thinking around real marginal returns is also not smart.

FORBES: Sunk Costs Don't Matter in Venture, Until They Do

And I'm fully willing to say that I'm not smart enough to do things all or nothing.

FORBES: Intelligent Investing Briefing Book