Cavity wall
[医] 洞壁
📖 牛津释义
cavity wall
wall consisting of two separate walls with a space between, designed to give extra insulation 夹壁墙（两道墙中间有空隙, 用以增强绝缘性）.
🧩 词语组成解析
🗣️ 情景例句
I am speaking of people in general.
我所予的是一般人。
Good watch prevents misfortune.
有备无患。
I was born in England -- in a small town near London.
我生于英格兰--伦敦城附近的一个小镇。