边线

I asked the spectators to keep back from the sideline.

我要求观众们不要走近线。

The ball ran to the boundary.

球向线滚去。

A pass route in which the receiver runs downfield for several yards, then cuts at a right angle toward the nearest sideline.

价格沿惯性向前运行一段，然后朝最近的线直角切入。