the changjiang river is about 6397 metres long划线部分（about 6397 metres long）提问
问题描述：
the changjiang river is about 6397 metres long划线部分（about 6397 metres long）提问
—— —— —— ——the changjiang river?
答
What's the length of the changjiang river
请在客户端右上角评价点“满意”即可,可是long被画线了我知道！ 放心吧！！注意：How long 是就时间提问的， 这里不能用！【What's the length of 】the changjiang river ?刚好四空， 显然是题目所要求的