a room under the ground away from a house or other building, where people can go to be protected in the event of severe weather

In the Midwest, people have storm cellars and children do tornado drills in school. 在中西部地区，人们有防风地下室，孩子们在学校进行龙卷风演习。

I've never personally had to take refuge in a storm cellar. 我个人从来没有躲进过避风窖。