boom
boom — noun
1. a low, powerful noise that carries a long way and often comes from something lar
a low, powerful noise that carries a long way and often comes from something large, empty, or explosive.
A sudden boom shook the windows just after midnight.
boom + shake the windows
From the bay came the deep boom of a ship's horn.
the boom of + sound source
The children heard a boom from the hills and ran inside.
Each firework ended with a bright flash and a heavy boom.
文法句型
a boom
the boom of + sound source
a boom from + place
用法筆記
Often used for a single striking noise, especially with 'of' or 'from' to show where it came from: 'the boom of the guns', 'a boom from upstairs'.
常見錯誤
2. a stretch when business, prices, or building activity go up fast and making mone
a stretch when business, prices, or building activity go up fast and making money becomes easier than usual.
The city grew rich during the oil boom of the 1970s.
during the boom
Builders made huge profits in the housing boom last year.
boom in housing/property
A cheap loan policy helped start a boom in new shops.
During the postwar boom, factory jobs were easy to find.
文法句型
a boom in + industry/price/sales
during a boom
用法筆記
Common with 'in' plus the part of the economy that is rising, such as housing, trade, exports, or tourism. Distinguish from noun 3, which is about any sharp rise or a fashion for something, not specifically the economy.
常見錯誤
3. a strong rise in the amount of something, or a phase when many more people sudde
a strong rise in the amount of something, or a phase when many more people suddenly become interested in it.
Streaming shows created a boom in true-crime podcasts.
a boom in + trend or product
After the gold medal, there was a boom in skate lessons.
there was a boom in + activity
The singer's breakup album started a boom in fan clubs.
Online orders saw a huge boom during the long holiday weekend.
文法句型
a boom in + activity/product/hobby
a boom in popularity
用法筆記
Usually singular. Use this sense for trends, hobbies, products, or public interest. Distinguish from noun 2, where the growth is specifically in business or the wider economy.
常見錯誤
4. the bar along the lower edge of a sail, moved from side to side to set the sail
the bar along the lower edge of a sail, moved from side to side to set the sail at the right angle to the wind.
Ravi ducked as the boom swung across the small boat.
the boom swung across + boat
A loose rope let the boom hit the side hard.
The coach told the children to hold the boom steady.
When the wind changed, the boom moved quickly to port.
文法句型
the boom swung across + boat
hold/lower/raise the boom
用法筆記
A sailing term. Learners most often meet it with verbs such as 'swing', 'hold', 'raise', and 'lower'.
5. a long rod used above actors to keep a microphone close enough for recording whi
a long rod used above actors to keep a microphone close enough for recording while staying out of the camera picture.
The sound assistant raised the boom above the two actors.
hold the boom above + actors
A shadow from the boom fell across the kitchen set.
During the interview, the boom stayed just outside the camera frame.
The director stopped filming when the boom dipped into view.
文法句型
hold the boom above + person
the boom dips into the shot
用法筆記
Usually refers to the pole used by the sound crew, though in everyday film talk it can also mean the whole microphone rig.
boom — verb
1. to send out a low, heavy sound that rolls through the air, or to make such a sou
to send out a low, heavy sound that rolls through the air, or to make such a sound fill a place.
Thunder boomed over the dark fields for most of the night.
boom over/across + place
Music boomed from the gym during the school dance.
boom from + source place
The old cannon boomed twice across the harbor.
Speakers boomed the warning across the crowded station.
文法句型
boom
boom from/across + place
boom + sound/message across + place
用法筆記
Most often intransitive, with the source or place added after it: 'music boomed from the truck'. The transitive pattern is less common and usually takes a sound, announcement, or short message as its object.
常見錯誤
2. to become much larger, richer, or more successful in a short time.
to become much larger, richer, or more successful in a short time.
Business boomed after the new bridge opened near the port.
business boomed after + event
Tourist numbers boomed once the island airport expanded.
Small coffee brands boomed during the years of cheap rent.
After the app went viral, sales boomed around the world.
文法句型
business/industry/town booms
boom after + event
boom in + period
用法筆記
The subject is usually a business, town, industry, market, price, population, or sales figure. Distinguish from noun 2, which names the period of rapid success rather than the process itself.