boom/buːm/

n. a quick increase of business activity

v. increase in business

n. [S] 繁荣：The region enjoyed an economic boom in 1990s. 这个地区在20世纪90年代时经济一片繁荣。

◇[a boom in sth] a boom in tourism 旅游业的繁荣

v. [I] 兴旺，繁荣：Business boomed after the reform. 改革之后，商业兴旺起来。

音组-oom/-uːm/

boom; broom; room; zoom