后刀面棱宽
After adopting the policy of forest conservation, the problem of desertification of land has been relieved.
实行封山育林的办法以来, 这里的土壤沙化问题有了明显缓解.
瑞鸿网 · 高考英语
瑞鸿网 · 双语娱乐资讯
瑞鸿网 · 外贸英语