Sadf
[计]= System Analysis and Design Facility,系统分析和设计设备[设施]，系统分析和设计程序
🗣️ 情景例句
I'm as healthy as a horse.
我像马驹一样健康。
Which one is more economical?
哪一个是比较经济的？
Hay had been cut and cowsheds had been cleaned.
干草已切好，牛棚也打扫干净了。