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

They're going to want to help you if you're young and smart,

他们会想要帮助你的，如果你年轻又聪明，

就业的方法 - SpeakingMax英语口语达人

And they haven't been smart about the means they're using.

他们也不够精明,他们手段拙劣。

普林斯顿公开课 - 国际座谈会课程节选

"If they're smart, they'll keep Ray Kelly, " he said.

WSJ: NYPD Losing Its 'Four-Star General'

"They're being smart, they're letting the story unfold, " said Nelson.

CNN: By Ronald D. Elving, CQ Staff Writer

They're smart, dedicated and extremely motivated to move to the next stage in their career.

CNN: EMBAs: Older, experienced, driven