There should be at least two lines in each windbreak.

风林至少应该包含两条线。

One method of soil conservation is the use of windbreaks.

土壤养护的一办法就是使用风林。

Windbreaks help prevent the loss of soil.

风林可止土壤流失。

Windbreaks not only protect land and crops from the wind.

风林不仅能保护土地和免受风的破坏。

Windbreaks can be highly valuable for protecting grain crops. For example, studies have been done on windbreaks in parts of West Africa.

风林对保护谷来说很有用，比如，西部分地区已经对风林做了研究。

Windbreaks can be highly valuable for protecting grain crops.

风林对于保护粮食常有价值。

But here is something interesting about windbreaks.

但这里有一些关于风林的有趣之处。

The enemy's shellfire continued all day and people hid in the shelter-belt.

敌人的炮火延续了整天，人们躲进风林。

Locally grown trees and plants are considered the best choices for windbreaks.

当地种植的树木和植被认为是风林的最佳选择。

They seem to work best when they allow some wind to pass through the barrier of trees or plants around a field.

当风林允许部分风穿过树木或的障碍时，它们起的用最好。

These studies found that grain harvests were as much as twenty percent higher in fields protected by windbreaks compared to fields without them.

研究发现，与那些没有风林保护的农田相比，那么有保护的农田谷产量能提高20%。

Windbreaks not only protect land and crops from the wind. Surplus trees can be cut down and used or sold for wood.

风林不仅能保护土地和免受风的破坏，额外的树木应该砍下来使用或出售。

By serving as a windbreak in the winter and providing shade in the summer, trees can help homeowners conserve energy, save money and more.

通过在冬天充当风林，在夏天提供荫凉，树木可以帮助房主节约能源，节省金钱等等。

One method of soil conservation is the use of windbreaks. Windbreaks are barriers formed by trees and other plants. Farmers plant these barriers around their fields.

土壤保护的一办法就是使用风林，风林是由树木和其他做成的障碍，农民在农田周围种上这些障碍。

The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are considered the best choices for windbreaks.

第二紧挨着的是低矮些的有叶子的树。当地长的树木和最适合做风林。