害群之马black sheep; bad apple (person who is not wholesome, honest, or trustworthy; person who is undesirable)
每道题只列一处，听力原文优先 · 按最近的试卷排
真题出处来自 FreeTCF 题库，做题要在 FreeTCF 登录；这里只列出这个词出现的句子。
