1·For this reason, a windbreak works best if it contains only sixty to eighty percent of the trees and plants that would be needed to make a solid line.
出于这个原因，如果防风林只包含60%到80%的可以组成一道坚固防线的树木或植物，它所起到的效果最好。
2·Big and tall trees must be chosen to establish windbreak forests.
防风林一定要选用高大的树木品种。
3·There should be at least two lines in each windbreak .
在每个防风林中应该至少有两条防线。
4·I zipped and unzipped my rain jacket at different times, but had to keep it on as a windbreak.
余压缩及解压缩我国雨夹克，在不同的时间，但将其作为防风林。
5·The woods along the coast provide a good windbreak.
沿海边的树木是很好的防风林。