基本解释[农业科学]甜菜潜叶花蝇英英字典柯林斯英英字典 a muscid fly, Pegomyia hyoscyami: a common pest of beets and mangel-wurzels (Also called mangold fly)beet fly剑桥字典beet fly柯林斯字典专业释义农业科学甜菜潜叶花蝇