Les
abbr. 发射脱离系统（Launch Escape System）
🗣️ 情景例句
Do have some more, there's plenty left.
多吃一点，还有很多呢！
I guess that's Ok. What time should I check in?
我想这正合适。我应该什么时候去办理登机手续呢？
' I looked down and nearly fell off the ladder when I saw a policeman.
”我向下面看去。当我看清是一个警察时，差一点儿从梯子上掉下去。