Sadf
[計]= System Analysis and Design Facility,系統(tǒng)分析和設(shè)計設(shè)備[設(shè)施]，系統(tǒng)分析和設(shè)計程序
??? 情景例句
Nowadays many people go traveling for the holidays.
下面許多人都在假期里去度假。
It is right to put everything in its proper use.
凡事都應(yīng)該用得其所。
Is this Mr. Jones?
是瓊斯先生嗎？