Put your hand up if you need more paper.

若有人还要纸，请举手。

《牛津词典》

Put your hand up if you know the answer.

知道答案就举手。

《牛津词典》

Why didn't you put your hand up?

你为什么不举手？

youdao

In that case, please just put your hand up.

如果那样的话，请直接举手。

哈佛公开课 - 幸福课课程节选

You can go up to her and put your hand on her shoulder and offer a hug and say,

你可以走过去，把手放在她的肩上，给她一个拥抱，说，

You look 课堂 - SpeakingMax英语口语达人

Ask in any pub put your hand up if you like Asians, you won't get one.

ECONOMIST: Race in Oldham

Put your hand up in the back, I know you remember this spot.

FORBES: Engagement Marketing Fever - Are Marketers Finally Catching It?

Were you to put up your hand, palm fully exposed as if making a stop sign, that could put you at a distinct disadvantage: impersonating a law-enforcement officer, or at least a crossing guard, without any weapons to back it up, and the driver for all you know with unaddressed anger-management issues behind the wheel of a 7, 000-pound Escalade.

WSJ: Yielding With a Purpose