depopulate/ˌdi:ˈpɔpjuleɪt; di`pɑpjəˌlet/ v[Tn]reduce the number of people living in (a city, state, etc) 减少（某城市、 州等）的人口 a country depopulated by war, famine, disease, etc 因战争、 饥荒、 疾病等而人口下降的国家.
牛津英汉双解词典