nightmare
🇺🇸
/ˈnaɪtmer/
🇬🇧
/ˈnaɪtmeə(r)/
a scary or bad dream
She had a nightmare about being lost in a dark forest.
她做了一个关于在黑暗森林中迷路的噩梦。
a very scary or hard experience
The traffic jam was a nightmare that made us very late.
交通堵塞是一场噩梦,让我们迟到了很久。