big-rig ———— 商用大卡车（名词，俚语）
英文释义
(noun, SLANG) A large commercial truck, usually having eighteen wheels.
例句

The narrow road was completely blocked by a big-rig that had collided with a bus.

一辆商用大卡车与一辆公交车相撞，狭窄的道路被彻底阻塞了。