bonanza
/bəˈnænzə; bə`nænzə/ n
1 source of sudden great wealth or luck; increase in profits 暴富或幸运之源; 利润的增加
[attrib 作定语]
It's been a bonanza (ie very profitable) year for the tourist trade. 对旅游业来说, 这是财源滚滚的一年.
2 (US) rich output from a gold mine, oil well, etc （金矿、油井等的）丰富产量.