18-wheeler

短语

词形变化

18-wheelers 复数 18-wheelers

别名

eighteen-wheeler

释义与例句

n.
  1. 1.

    A big rig truck: a semi-trailer plus the truck or tractor pulling it.

词源

From the total number of wheels: two front steering wheels on the tractor, plus dual wheels on each end of two axles (total of 8) at the rear of the tractor and supporting the front of the trailer, plus dual wheels on two axles at the rear of the trailer.

来源：wiktionary