drainage basin英 [ˈdreɪnɪdʒ ˈbeɪsn]美 [ˈdreɪnɪdʒ ˈbeɪsn]排水盆池;流域英英释义nounthe entire geographical area drained by a river and its tributariesflood control in the Missouri basinSynonym:river basinbasinwatershedcatchment areacatchment basindrainage area双语例句