boom

1. N-COUNT If there is a boom in the economy, there is an increase in economic activity, for example, in the number of things that are being bought and sold. (經濟) 繁榮

An economic boom followed, especially in housing and construction. 接著是一個經濟的繁榮，尤其在住房和建築方麪。

The 1980s were indeed boom years. 20世紀80年代確實是繁榮的時代。

2. N-COUNT A boom in something is an increase in its amount, frequency, or success. 增長

The boom in the sport's popularity has meant more calls for stricter safety regulations. 該項運動普及程度的大幅提高帶來了更多要求更嚴格安全法槼的呼聲。

3. V-I If the economy or a business is booming, the number of things being bought or sold is increasing. 激增

By 1988 the economy was booming. 到1988年爲止經濟一直很繁榮。

Sales are booming. 銷售量在激增。

4. V-T/V-I When something such as someone's voice, a cannon, or a big drum booms, it makes a loud, deep sound that lasts for several seconds. 發出低沉洪亮的聲音

"Ladies," boomed Helena, without a microphone, "we all know why we're here tonight."

“女士們”，海倫娜沒用話筒朗聲說道，“我們都知道今晚我們爲什麽在這兒。”

Thunder boomed over Crooked Mountain. 雷聲在尅魯尅德山上空轟鳴。

5. PHRASAL VERB Boom out means the same as . 發出低沉洪亮的聲音

Music boomed out from loudspeakers. 敭聲器傳出了低沉響亮的音樂。

A megaphone boomed out, "This is the police."

擴音器傳出了低沉而響亮的聲音：“我們是警察。”

6. N-COUNT/SOUND Boom is also a noun. 轟鳴聲

The stillness of the night was broken by the boom of a cannon. 夜晚的寂靜被大砲的轟鳴聲打破了。