The Mississippi River is one of the longest river in the world.哪错了?为什么啊

The Mississippi River is one of the longest river in the world.哪错了?为什么啊

the longest rivers

需要复数形式

密西西比河是世界上最长的河流之一。

你好！ The Mississippi River is one of the longest rivers in the world 自己理解~~ 仅代表个人观点，不喜勿喷，谢谢。