Bright as you are, you got to smarten up.

虽聪明 但得更机灵。

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。”

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，才能真正彻底转换。

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

莎拉，拜托 这一生就这次聪明一。

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？

" 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前举行。我建议们在等候时，好好把自己整理一下，精神一些。”