wayward 是任性、固执的意思，也可以指反复无常、意想不到的。

 

Train service through San Francisco's Sunset Tunnel was interrupted for about an hour when a wayward SUV entered the underground rail tunnel and exited the other side. 旧金山日落隧道的地铁服务中断了大约一个小时，当时一辆SUV意想不到地进入地铁隧道并从另一侧出来，