Rio Negro
/ˌriːəʊˈneɪgrəʊ/- a river of South America, which rises as the Guainia in eastern Colombia and flows for about 2,255 km (1,400 miles) through NW Brazil before joining the Amazon near Manaus内格罗河（南美洲河流, 发源于哥伦比亚东部, 当地河段称为瓜伊尼亚河, 流程约2,255公里, 即1,400英里, 经巴西西北部在马瑙斯附近注入亚马孙河）。