lights-out
US /ˈlaɪts.aʊt/
UK /ˈlaɪts.aʊt/

名词
1.
熄灯时间, 就寝时间
the time when lights are to be extinguished, especially in a military camp or dormitory
示例:
•
At lights-out, all soldiers must be in their bunks.
熄灯时,所有士兵必须回到各自的铺位。
•
The warden announced lights-out at 10 PM.
典狱长宣布晚上10点熄灯。
形容词
在 Lingoland 学习这个单词