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
It's a problem, isn't it?
这确实是个问题，不是吗？
Let's get together sometime.
有时间我们聚一下吧。
Would you like to try it?
您要试一试吗？