n (Brit) (abbr 缩写 M) (US expressway) wide road specially built for fast-moving traffic, with a restricted number of places for entry and exit and separate carriageways for vehicles travelling in opposite directions 高速公路
*join/leave a motorway 开上[开离]高速公路
* You're not allowed to stop on motorways. 高速公路上不得停车.
* [attrib 作定语] a motorway service station 高速公路汽车加油站. =>Usage at road 用法见 road.

n[C]
BrE a very wide road for travelling fast over long distances, especially between cities
→expressway, freeway freeway, highway highway, interstate interstate