fox’s tail—something that gives away a person’s real character or evil intentions
狐貍尾巴
the fox has shown its tail (or displayed its cloven hoof);sth that gives away a person's real character or evil intentions
狐貍尾巴hú lí wěi bā
傳說狐貍能變成人形以迷惑人，但其尾巴怎么也藏不起來。比喻壞人的本來面目或罪證。sth. that gives away a person’s real character or evil intentions, cloven hoof, fox’s tail