英语翻译Lanzhou is the only capital city that the Yellow River,the second longest river in China,passes through.

Lanzhou is the only capital city that the Yellow River, the second longest river in China, passes through.
兰州是黄河（中国第二大川）流经的唯一的省会城市。
【可以把括号中的内容用破折号，表解释说明的意思。】

兰州是黄河（中国第二大河流）流经的唯一的省会城市。

兰州是中国第二长河黄河流经的唯一省会城市

兰州是中国第二长河流黄河唯一流经的省会城市
望采纳，谢谢

Lanzhou is the only capital city that the Yellow River, the second longest river in China, passes through.
兰州是黄河,即中国第二长河,流经的省会城市.

兰州是唯一一个中国第二长的黄河流经的盛会城市。