ground inclination

例句：

1. 1.The car's ground inclination is too steep for the driver to control.
   汽车的地面倾斜度对司机来说太陡，难以控制。
2. 2. The mountain's ground inclination is so steep that it requires a guide to navigate safely.
   这座山的地面倾斜度太陡了，需要导游才能安全导航。
3. 3. The scientist measured the ground inclination of the slope and found it to be 25 degrees.
   科学家测量了斜坡的地面倾斜度，发现它为25度。