gradient constant

例句：

1. 1. The mountain is a steep gradient that requires careful navigation.
   这座山是一个陡峭的斜坡，需要小心导航。
2. 2. The car's acceleration is due to the strong gradient of the road.
   汽车的加速是由于道路的强烈坡度。
3. 3. The scientist used a gradient to measure the depth of the ocean.
   科学家使用梯度来测量海洋的深度。