center line

• 将道路分成两条相反方向车道的线，或技术图纸和运动场上的基准线。

A painted or physical line that divides a road into two lanes for traffic moving in opposite directions, or a reference line used in technical drawings and sports fields.

1. Road markingA2formal

   A painted line on a road that separates traffic moving in opposite directions.

   中心线

   • The driver carefully stayed to the right of the center line.
   • The center line on the highway is often yellow.
   • Do not cross the solid center line on a two-lane road.

2. Geometric axisB1formal

   A line that passes through the center of a shape, object, or area, dividing it symmetrically.

   中心线

   • The center line of the circle is its diameter.
   • The architect drew a center line through the blueprint.
   • The center line of the field marks the halfway point.