Yeah, hard-working, smart as a whip. Total package.

是的，工作努力，聪明伶俐，干净利落。

If someone is smart as a whip, they are able to think very quickly.

如果有人聪明绝顶（smart as a whip），他们就能非常迅速地思考。

You're right. I'm smart as a whip. I should be able to figure this out.

你说得对，我聪明得让人鞭长莫及，我早晚能想出办法。

She's my exuberant, smart as a whip, kind, brave, dreamer of a little sister.

她是我的一个精力旺盛、聪明如鞭、善良、勇敢、梦想家的小妹妹。