| 释义 |
boomboom1 /bum / noun [countable] - (
business商业, history历史) a period in which something increases or develops very quickly繁荣；兴盛；激增◆There was a boom in car sales in the 1990s.20 世纪 90 年代，汽车销售急剧增长。◆a boom year for exports出口兴旺的一年 ➡ look at baby boom
- a loud, deep, hollow sound轰鸣声；隆隆声◆We heard a huge boom followed by silence.我们听到轰的一声巨响，然后是一片寂静。
boomboom2 /bum / verb - [intransitive] to grow very quickly in size or value迅速发展；繁荣昌盛；激增◆Business is booming this year.今年生意红火。
- [intransitive, transitive] boom (sth) (out) to make a loud, deep, hollow sound发出低沉洪亮的声音；轰鸣◆guns booming in the distance远处轰鸣的枪炮◆The loudspeaker boomed out instructions to the crowd.扩音器里传来低沉有力的声音，向人群发出指示。
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