earth'saxis(地轴)
latitude(纬度)
longitude(经度)
subtropical(亚热带的)
subfrigid(亚寒带的)
archipelago(群岛)
humidity(温度)
aircurrent(气流)
front(锋面)
earthquake(地震)
epicenter(震央)
erosion(侵蚀)
reef(矿脉)
glacier(冰河)
iceberg(冰山)
meander(曲折)
tributary(支流)
delta(三角洲)
heavenlybody...[查看详情]