a river in Germany; rises in the Black Forest and flows north into the Rhine
例句
用作名词 (n.)
It ends where the Neckar enters the Rhine near Mannheim.Along the way, you'll pass many castles, vineyards, country inns and beautiful old towns. 从曼海姆城附近的莱恩河进入到内卡河,整条单车路径,沿途你经过很多别有风格的城堡,葡萄庄园,乡村小旅馆和美丽的旧城镇。