abbr. system effectiveness data system 系统效能数据系统; sequential dual-scanning system 顺序双扫描系统; support equipment data system 支援设备数据系统; space electronic detection system 空间电子探测系统
🗣️ 情景例句
We want to be sure that you're responsible
我们要确定你是肯负责的,
Don't be offended by his haste, he is a very busy man.