基本解釋保護(hù)同根派生 eonservation相關(guān)詞英漢例句forage with water and soil eonservation 水保型牧草eonservation by doors and windows 門窗節(jié)能soil and water eonservation 水土保持energy eonservation 節(jié)能quantity of soil eonservation 土壤保持量eonservation更多例句