turn thumbs down on
A:Don't you agree that all the thieves should be punished by cutting off their fingers?
A:你不认为小偷该被剁掉手指以示惩罚吗？B:I'm afraid many people would turn thumbs down on it.
B：恐怕许多人会不赞成。
A:Don't you think in that case, there wouldn't be so much stealing?
A:你不认为如果那样的话，偷窃现象就会减少吗？B:Definitely, But I think it's too fierce.
B:绝对正确，但我认为那太残忍了。