Security system
[计] 安全系统
🧩 词语组成解析
🗣️ 情景例句
Yes, I am.
是的，我是。
I hate to dust the furniture and bookcases.
我非常讨厌擦拭家具和书架上的尘埃。
Who could have imagined, in the mid 1970s, for example, that by the end of the 20th century, computers would be as common in people's homes as TV sets?
举个例子吧，在20世纪70年代中叶又有谁能想得到在20世纪末的时候，家庭用的计算机会像电视机一样普遍？