1. They built thousands of circular stone windbreaks and gardened inside them, and used broken volcanic rocks to keep the soil moist. 他们建造了成千上万的圆形石质防风林并在其中种植花草，还用破碎的火山岩来保持土壤湿润。
2. Windbreaks help prevent the loss of soil. 防风林有助于防止土壤流失。
3. They provide windbreaks and shade from the sun. 它们可以提供防风林并且遮挡太阳。
4. But here is something interesting about windbreaks. 但是，这里有一些关于防风林有趣的现象。
5. Locally grown trees and plants are best for windbreaks. 地方性种植的树和植物对防风林来说是最好的。
