Shortly after he took over the Reader's Digest Association in 1984, George Grune unlocked the company's boardroom and announced that the room was now open to the employees.
2018年6月六级真题(第一套)听力 Section C
柯林斯高阶英汉双解学习词典释义
VERB
(用钥匙)打开,开启(门、房间、箱匣等的锁)
If you unlock something such as a door, a room, or a container that has a lock, you open it using a key.