smart

I'm not smart enough to understand computers.

我不够聪明，不懂计算机。

She gave him a smart smack on the bottom.

她狠狠地在他屁股上打了一巴掌。

Until the advent of smart weapons, repeated attacks were needed to ensure the destruction of targets.

在智能武器出现之前，为了摧毁目标必须对其进行反复的打击。