"So,we have the troops that we can send. We just have to do it smart, and we just can't send troops and troops and troops and troops.

VOA: standard.2009.11.16

It violates gravity, but six-month-olds aren't smart enough to know that a block just stuck over here is also surprising.

因为它违背了地心引力,但六个月大的婴儿还是不够聪明,他们没能发觉突出的木块也是令人惊奇的

耶鲁公开课 - 心理学导论课程节选

It's possible that he genuinely didn't know what to do, that he wasn't smart enough to understand that he needed to point to the other one.

有可能他是真的不知道该做些什么,他还不够聪明,无法理解他需要指向另一个物体

耶鲁公开课 - 心理学导论课程节选

Kids always overheard things they shouldn't, and they weren't smart enough to know better.

NPR: 'Arson' by Nick Lysohir

"We know we aren't smart enough yet on the conduct of tournaments, " he says.

WSJ: Prizes Abound but Unclear if They Are Best Way to Get Innovation

That's wasn't too smart, you can't beat nature.

BBC: Wojciech Szczesny