基本解释草地辳業词组短语短語ley y farming 休閑期耕作;草地辳業ley farming system 草田耕作制ley farming更多词组英英字典柯林斯英英字典 the alternation at intervals of several years of crop growing and grassland pasture ley farming剑桥字典ley farming柯林斯字典专业释义辳業科學草地辳業地球科學休閑期耕作