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
动力: 1.(各种作用力) motive power; power; dynamic 短语和例子产生动力 make power; 原动力 motive power; 蒸汽动力 steam power; 从波浪中获得动力 obtain power from waves; 流水可以产生动力来推磨。 running water produces power to run mills2.(