工人们正在修建一堵墙来防止洪水侵袭村庄。

Workers are building a ___wall to protect the village from flooding.

这座城堡的石墙已经屹立了数百年。

The stone ___wall of this castle has stood for centuries.

这座高墙阻挡了阳光照进花园。

The tall ___wall blocks sunlight from reaching the garden.