Study on techniques of rotation management of crops, forest and pasture on dune-fixing open woodland of Pinus sylvesteis var. Mongolica是什么意思_Study on techniques of rotation management of crops, forest and pasture on dune-fixing open woodland of Pinus sylvesteis var. Mongolica在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句