托福词汇之大雾
大雾天气:foggy weather
低能见度:low visibility
危险级:hazardous level
晨雾:morning haze
烟雾:smog
尘埃:dust particle
污染物:pollutant
笼罩:shroud
口罩:gauze mask
高速路关闭:expressway closed
交通阻塞:congestion
车辆首尾相连:bumper-to-bumper
连环撞:pile-up
