Study on Vegetative Pattern and Technique for Protecting Slopes along the General Trunk Canal Line in the Middle Line Enginggering of Transferring Water from the South to the North是什么意思_Study on Vegetative Pattern and Technique for Protecting Slopes along the General Trunk Canal Line in the Middle Line Enginggering of Transferring Water from the South to the North在线翻译_英语_读音_用法_例句