crash barrier

• n. (公路上的)防撞护栏；防撞隔离墩

英英释义

Noun:

1. a strong protective barrier that is erected around a racetrack or in the middle of a dual-lane highway in order to reduce the likelihood of severe accidents

例句

用作名词 (n.)

1. Ideally, the cars slide along this wall or crash barrier and dissipate energy and speed.
   理想上，赛车沿着这面墙或者是防撞护栏消散冲击力和速度。