挙手を英語でなんと言うか？

a show of hands で手を挙げるの意味になります。0:14 so can I get a show of hands-- how many of you in this room have been on a plane in this past year? 皆さんの中で去年飛行機に乗ったことのある人は手を挙げてください。

How Germs Travel on Planes — And How We Can Stop Them | Raymond Wang | TED Talks
https://www.youtube.com/watch?v=9352Hm3UxEE  1:36 by a show of hands, who's planning to leave today? 今日、非難される方は手を挙げて下さい。　
Irene Cometh: Emergencies Declared
https://www.youtube.com/watch?v=kGpv504A5G0  3:50 how many of you? show me your hands.
Homeless In America Families Living In Cars

練習問題解答
a-3358 show of hands
a-4898 show of hands
a-5693 a show of hands
a-7296 by a show of hands
b-0149 by a show of hands
b-1242 by a show of hands
b-1600 by a show of hands
b-2873 by a show of hands