阳台是有墙的平台。
A balcony is a platform with a wall.

城堡的墙很厚。
The castle walls are very thick.

混凝土墙是用钢筋加固的。
The concrete walls are reinforced with steel rods.

这堵墙是用燧石建成的。
This wall is made of flint.

这面墙可以作为你照相机的依托。
This wall will do as a rest for your camera.

我们正在给房子的外墙涂漆。
We are painting the exterior wall of the house.

开出鲜艳花朵的爬藤植物瀑布般悬挂在花园墙上。
Climbing plants with their bright flowers hung in cascades over the garden wall.

他用一把锤子把钉子打进墙里去。
He hit the nail into the wall with a hammer.