undercover
英 [?nd?'k?v?; '?nd?-]
美['?nd?'k?v?]
- adj. 秘密的，秘密從事的；從事間諜活動(dòng)的
考試真題
- Last year, the Transportation Security Administration ( ' , TSA) found in a secret check that undercover investigators were able to sneak weapons---both fake and real—past airport security nearly every time they tried.
出自-2017年考研閱讀原文
- Last year, the Transportation Security Administration found in a secret check that undercover investigators were able to sneak weapons—both fake and real—past airport security nearly every time they tried.
2017年考研真題（英語一）閱讀理解 Section Ⅱ