線上的用法和樣例：
例句
-
我們出發時，太陽正在地平線上。
The sun was on the horizon when we set off. -
那座巨大的島嶼隱隱約約浮現在地平線上。
The mountainous island loomed on the horizon. -
燈光在地平線上閃爍著。
The lights were blinking on the horizon. -
鳥棲息在電線上。
The bird perched on the electric wires. -
轉轍軌，渡線使火車從一條鐵路線轉到另一條鐵路線上的短的連接軌道
A short connecting track by which a train can be transferred from one line to another.
