outerwall

例句：

1. 1.The engineer designed the new building with an outer wall that was more than twice as tall as the old one.
   工程师设计的新建筑有一个比旧建筑高两倍的外墙。
2. 2. The construction workers were busy fixing the outer wall of the old factory.
   建筑工人正在忙着修理旧工厂的外墙。
3. 3. The architect wanted to add a glass-enclosed balcony to the outer wall of the house.
   建筑师想在房子的外墙上加一个玻璃封闭的阳台。