card track

例句：

1. 1. The train's on the card track, so please be careful.
   火车正在运行，请小心。
2. 2. The engineer used a card track to guide the car through the tunnel.
   工程师使用卡片轨道来引导汽车穿过隧道。
3. 3. The card track is designed to prevent cars from getting stuck in the mud.
   卡片轨道被设计来防止汽车陷入泥泞。