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
I didn't realize how late is was.
我不知道已经这么晚了。
I don't know, sir, but I guess the computer made some mistake.
不知道呀，好像是电脑出了故障了。
And she encouraged me when I made up my mind to go to college.
我下决心上大学时，她则给我予鼓励。