INCREASE IN BUSINESS 业务增加, [sing.] a quick increase of business activity

〔生意〕繁荣，兴旺，激增;

The boom has created job opportunities.

经济繁荣创造了就业的机会。

a sudden boom in the housing market

房产市场的突然兴旺

the post-war property boom

战后财富的迅速增长

In boom times, airlines do well.

在经济繁荣时期，航空公司生意很好。

the economic boom of the 1950s

20 世纪 50 年代的经济繁荣

The economy went from boom to bust (=from increasing to decreasing) very quickly.

经济很快就从繁荣走向了萧条。

WHEN STH IS POPULAR 某事物的流行, [sing.] an increase in how popular or successful something is, or in how often it happens

流行，风靡:

the disco boom of the 1970s

20 世纪 70 年代的迪斯科热

the boom in youth soccer in the U.S.

美国的青年足球热

SOUND 声音, [C] a deep loud sound that you can hear for several seconds after it begins, especially the sound of an explosion or a large gun

隆隆声

BOAT 船, [C] a long pole on a boat that is attached to the bottom of a sail, and that you move to change the position of the sail

帆桁，帆杆

LONG POLE 长杆子, [C]

ON A RIVER / HARBOUR 在河上/在港口, [C] something that is stretched across a river or a bay to prevent things floating down or across it

〔横拦于河面或港湾以阻止物件漂走的〕挡栅，水栅

[I usually in progressive] if business, trade, or a particular area is booming, it is increasing and being very successful

〔商业、贸易等〕繁荣，迅速发展:

Business was booming , and money wasn't a problem.

生意非常兴隆，钱已不是问题。

Tourism on the island has boomed.

该岛的旅游业迅速发展。

also boom (sth ↔ ) out [T] to say something in a loud deep voice

用洪亮而低沉的声音说:

'Ladies and gentlemen,' his voice boomed out.

“女士们，先生们。”他的声音低沉而有力。

also boom out [I] to make a loud deep sound

发出低沉的声音，隆隆作响:

Guns boomed in the distance.

远处大炮隆隆作响。

a booming economy

迅速发展的经济