短語(yǔ)詞組短語(yǔ)shelter belt forest 防護(hù)林shelter -belt forest svstem 防護(hù)林體系protective forest shelter belt 防風(fēng)林forest shelter belt 防護(hù)林帶;防護(hù)林building forest shelter -belt 防護(hù)林建設(shè) 返回 shelter forest belt