请将下面这段话翻译成英文:
黑龙江
黑龙江是一条流经蒙古、中国、俄罗斯的亚洲大河,位于中国的东北部。黑龙江有南北两源,以南源额尔古纳河为河源,在俄罗斯注入鄂霍次克海峡。黑龙江,因河水含腐殖质多,水色发黑得名,古称“黑水”。黑龙江在古代是中国的内河,是满洲族人的发源发祥地。河流水力资源丰富,航运条件较好。
参考译文
Heilongjiang
Located in the northeast part of China, Heilongjiang is a large Asian river which flows through Mongolia, China and Russia. It has sources both in the south and north. The river’s southern source is the Argun River, finally flowing into the Okhotsh Strait in Russia. Because the river is rich in humus, it is black in color and is therefore called "Black Water". In ancient times, Heilongjiang was an inland river and the cradle of Manchu civilization. It boasts abundant water power resources and good navigation conditions.