阿穆尔河

ā mù ěr hé

same as 黑龍江|黑龙江[Hei1 long2 jiang1]

Amur River (the border between northeast China and Russia)

ā

abbr. for country names that begin with 阿[a1]: Algeria 阿爾及利亞|阿尔及利亚[A1 er3 ji2 li4 ya4], Afghanistan 阿富汗[A1 fu4 han4] etc

solemn

ěr

thus

river (CL:條|条[tiao2],道[dao4])