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
Three--t-h-r-e-e.
Three t-h-r-e-e。
In the multitude of counsellors there is safety.
谋士多，保安全。
I wanted to get my ball.
我是想捡回我的球。