contagious
- adj. 感染性的；会蔓延的
考试真题
- The reality is, taking one's phone out at the wrong time is worse than belching because, unlike other minor offense, checking tech is contagious.
2017年12月六级真题（第一套）阅读 Section B
- Berger explains in his new book, "contagious: why things catch on."
2016年高考英语全国卷3 阅读理解 阅读D 原文