" The Sorting Ceremony will take place in a few minutes in front of the rest of the school. I suggest you all smarten yourselves up as much as you can while you are waiting."

“过几分钟，分院仪式就要在全校师生面。我建议们在等候时，好好把自己整理一下，精神一些。”

Bright as you are, you got to smarten up.

虽然很聪明 但得更机灵点。

I just think it needs to smarten up a little bit for me to actually make the switch full time.

我只是觉得我需要稍微聪明一点，正彻底转换。

I suggest you all smarten yourselves up as much as you can while you are waiting.”

我建议们在等候时，好好把自己整理一下，精神一些。”

So, to smarten up is to freshen up or to clean up.

因此，“smarten up”意指“freshen up”或“clean up”。

Sara, come on. Smarten up for once in your life.

莎拉，拜托 这一生就这次聪明一点。

Now, look, will you stop having an existential crisis and smarten up?

听好了 不要再自怨自艾了 快打扮一下？

This is why she said, you need to smarten yourselves up.

这就是为什么她说，们需要打理一下自己。