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| NOUN |
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| /buːm/ |
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| 1 | C/U a sudden major increase in trade , profits etc in a particular country or region （贸易、利润等的）激增，暴涨 |
| the economic boom of the 1980s 20世纪80年代的经济迅速增长 |
| boom years 迅速增长年份 |
| | 1a | C a similar increase in the activity of a particular industry or part of a country’ s economy （某一行业或国家部分经济活动的）迅速增长，蓬勃发展 | | an export/investment/house-building boom 出口/投资/建房的迅速增长 | | +in The island is experiencing a boom in tourism. 该岛的旅游业在蓬勃发展。 | |
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| 2 | C a sudden increase in the popularity of something 盛行；兴起 |
| the aerobics boom of the 1980s 20世纪80年代的有氧健身操热 |
| +in the recent boom in all kinds of counselling and therapy 最近各种咨询服务和疗法的兴起 |
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| 3 | C usually singular a deep loud sound that continues for some time , for example the noise of thunder or an explosion （打雷、爆炸等的）隆隆声，低沉响声 |
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| 4 | C a pole with a camera or microphone attached to it , used in film-making or broadcasting （照相机或麦克风的）活动支架，吊杆 |
| | 4a | a long pole attached to the bottom of a boat’ s sail , that is used for changing the direction of the sail （帆的）下桁，张帆杆 | |
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| 5 | C a large floating object that is used for blocking a river or stream , for example to stop pollution flowing into it （用于阻止污染物等进入河流的）水栅，挡栅 |
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