Security management system
[计] 安全管理系统
🧩 词语组成解析
🗣️ 情景例句
We were all sorry when we heard that your brother had had an accident.
我对你弟弟的意外感到遗憾。
I know the boy whose father is a mailman.
我知道那个男孩的父亲是邮差。
Travellers on short trips to areas with water supplies of uncertain quality should avoid drinking tapwater, or untreated water from any other source.
短途旅行到水质不保险的地区时，应避免饮用水龙头的水或未经处理任何其他来源的水。