A preliminary study on the agricultural water resources balance and eco-agriculture program in a semiarid region--A case study from the west area of Jilin Province是什么意思_A preliminary study on the agricultural water resources balance and eco-agriculture program in a semiarid region--A case study from the west area of Jilin Province在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句