Pems
abbr. pico-electromechanical system 皮[微微]米电子机械系统; Portable Environmental Measuring System 便携式环境测量系统
🗣️ 情景例句
there's a lot to do around the house,
这屋里有很多事可做，
He knows much who knows how to hold his tongue.
懂得缄默的是明白人。
Why not?
为什么没有？