eg:The issue was decided by a show of hands.
这件事是通过举手表决决定的

7. show one's hand 表明自己的计划或意图；摊牌

eg:Don't show your hand too early.
不要过早摊牌。

8. show one's heels 逃走，逃离

eg:As soon as the burglar alarm went off, the housebreaker showed his heels.
防窃报警器一响，那个小偷就逃之夭夭了。