Its main stream, from Yibin in Sichuan Province to the sea, has a total length of 2,813 km and is open to navigation all year round.Chongqing, Wuhan and Nanjing are important ports along the river.是什么意思_Its main stream, from Yibin in Sichuan Province to the sea, has a total length of 2,813 km and is open to navigation all year round.Chongqing, Wuhan and Nanjing are important ports along the river.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句