n.a paved strip beside a motorway (for stopping in emergencies)
英汉双解大词典
hard shoulder(hardshoulders)
1.
N-COUNT(可数名词) Thehard shoulder is the area at the side of a motorway or other road where you are allowed to stop if your car breaks down. 硬路肩; 紧急停车带 [英国英语][usu 'the' N in sing]