initial slope

例句：

1. 1. The initialslope of the road is steep.
   这条路的初始坡度很陡。
2. 2. Theinitial slope of the hillis quite steep.
   这座山的初始坡度相当陡峭。
3. 3. The initialslope of the slope is steep.
   斜坡的初始坡度很陡。