the Black Hole of Calcutta
noun [ S ] UK humorous uk/ˌblæk ˌhəʊl əv kælˈkʌ.tə/ us/ˌblæk ˌhoʊl əv kælˈkʌ.t̬ə/
加尔各答黑牢；拥挤闷热的房间
an unpleasantly full and hot room
One guest at the crowded reception was heard to mutter "It's like the Black Hole of Calcutta in here." 有人听到拥挤的接待处的一个客人念叨说：“这个地方真像加尔各答黑牢一样闷热。”