tangential motion

例句：

1. 1. The path is tangentially parallel to the road.
   这条路与道路呈切线平行。
2. 2.The angle of the roof is tangentially related to the slope of the roof.
   屋顶的角度与屋顶坡度有关。
3. 3. The slanting sun casts long shadows across the field.
   倾斜的太阳在田野上投下长长的影子。