Les
abbr. 发射脱离系统（Launch Escape System）
🗣️ 情景例句
What do you do when you are not working?
工作之余你有什么消遣活动？
How was your flight? Was it comfortable?
你坐的班机怎么样？还舒服吗？
Will you introduce me to the new purchasing agent?
请替我引介新来负责采购的人好吗？