tangential path

例句：

1. 1.The path is tangential to the lake.
   这条路线斜对着湖。
2. 2. The angle of the roof is tangential to the wall.
   屋顶与墙的角度是切线角度。
3. 3.The geometry of the design is tangential to the original sketch.
   设计的几何形状与原草图切线。