知識(shí)貝殼
知識(shí)貝殼
所屬欄目：建筑施工英語(yǔ)
Themoreprosperousmanbecomes,themorewaterheuses.In1980sindevelopingcountries(theThirdWorld),somecommunitiesmanagewithanaverageof2.5gallons(12liters)ofwaterperpersonperday.InmostEuropeancitiesthedailydomesticconsumptionpercapitaofthepopulationisnearer33gall ......（本文共 5535 字 ） [閱讀本文] >>