M-s
abbr. minerals separation 选矿; Monday through Saturday 周一到周六; master-slave (flip-flop) 主-从（触发器）; Material Service (division of General Dynamics) 物资服务部（普通力学分科）
🗣️ 情景例句
Do I have any appointments?
我有什么约会么？
Think much, speak little, and write less.
勤思考，寡发言，少落笔。
John works very hard. He goes to work early.
约翰工作很努力。他早早上班。