土壤肥力学说theory: n. 1.理论,学理,原理。 2.学说,论说 (opp. ...soil: vt. (给畜舍内畜牲)喂青草[青饲料];(用青饲料给畜 ...fertility: n. (opp. sterility) 1.肥沃,丰饶; ...fertility of soil: 肥力soil fertility: 土壤肥力下载手机词典可随时随地查词查翻译