我们在花园周围建了一堵墙来保护隐私。

We built a ___wall around the garden for privacy.

语言障碍成为了他们交流中的一堵墙。

The language barrier acted as a ___wall in their communication.

我们在墙上贴了一张世界地图。

We put a world map on the ___wall.

这堵墙保护着村子免受野生动物的侵扰。

The ___wall protects the village from wild animals.

她在马拉松比赛中遇到了体能极限，几乎无法继续跑下去。

She hit a ___wall during the marathon and could barely keep running.