/bə'nænzə; 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.

n[C]
[Date: 1800-1900; Language: Spanish;Origin:'good weather', from Medieval Latin bonacia, changed from Latin malacia 'calm at sea', from Greek, from malakos 'soft']
a lucky or successful situation where people can make a lot of money
　2002 will be a bonanza year for the computer industry.
　an amazing cash bonanza