nightmare

The child woke up crying after having a scary nightmare about monsters.

(Chinese) 孩子在做了一个关于怪物的可怕噩梦后哭着醒来。

The heavy traffic jam during the snowstorm was a total nightmare for drivers.

(Chinese) 暴风雪期间的严重交通拥堵对司机来说简直是一场噩梦。