San Francisco river length of 2900 kilometers, flowing through the arid northeast, is the region's main source of water for irrigation.

圣弗朗西斯科河系全长2900公里，流经干旱的东北部，是该地区主要的灌溉水源。

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The three streams had similar latitude, river length and watershed area. All were the tributaries of the Yangtse River and located in the upstream areas.

探讨与香溪河具有相似纬度、相似河流长度和流域面积，同为长江上游支流的九龙河和冈曲河的大型底栖动物的群落结构特征与香溪河的差异。

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The river is 300 miles in length.

这条河长300英里。

《牛津词典》

With Vicksburg in Union hands, the North could control the whole length of the river.

VOA: special.2009.11.19

Then next to that north-south central hill country, you've got also running north to south, what we call the Great Jordan Rift Valley It goes the entire length of the country And the Jordan River runs through this valley.

靠近这个中心分布着南北走向山丘的国家，你看到,南北走向山谷，被称作约旦大裂谷,它贯穿整个国家的南北,约旦河流过这条裂谷。

耶鲁公开课 - 旧约导论课程节选

This means the spring floods that cleared the river of vegetation no longer happen, making it difficult for the cranes to use the length of the river to roost out of range of most predators.

BBC: Nebraska��s awe-inspiring crane migration

The precise length of a river is not easy to calculate and depends on correctly identifying the source and the mouth.

BBC: NEWS | Americas | Amazon river 'longer than Nile'

But the trust said the old canal route through Melksham had since been lost "under housing" and a new route using a short length of the River Avon would have to be built.

BBC: Plans for Wiltshire town's canal submitted