土壤: soil; ground; pedogenesis; ped-; pedo- 短语和例子多腐植质的土壤 humus-rich soil; 只要帝国主义还存在, 就有发生侵略战争的土壤。 as long as imperialism exists there will be soil for wars of aggression.; 土壤保持 [生态学] soil conse
非洲: africa◇非洲国家首脑会议 conference of the heads of african states; 非洲鲫鱼 african crucian; java tilopia; 非洲人 african
