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
Wouldn't it be nice if we could skip the examinations
要是我们可以略过考试 那岂不是很好
Turn left at the second light and then go straight for two blocks.
到第2排红绿灯处往左拐，然后一直往前走，过两个街区。
Yes, speaking.
是我，请讲。