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1.The river gradient is steep in this area, making it difficult for boats to navigate.
这个地区的河流梯度陡峭，使得船只难以航行。
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2.The gradient of the river changes significantly from one side to the other.
这条河的坡度在两岸之间有显著变化。
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3.The gradient of the river plays a crucial role in determining the flow rate and direction of the water.
河流的坡度对水流速率和方向起着至关重要的作用。