1. 昏暗的；幽暗的
If a place is gloomy, it is almost dark so that you cannot see very well.
e.g. Inside it's gloomy after all that sunshine...
尽管阳光明媚，里面依然暗淡无光。
e.g. ...this huge gloomy church.
这座昏暗的大教堂
2. 忧伤的；沮丧的；无望的
If people are gloomy, they are unhappy and have no hope.
e.g. Miller is gloomy about the fate of the serious playwright in America.
米勒对这位严肃剧作家在美国的命运颇为忧虑。