[N-COUNT 可数名词]气球 A balloon is a small, thin, rubber bag that you blow air into so that it becomes larger and rounder or longer. Balloons are used as toys or decorations.
She popped a balloon with her fork.
她用叉子戳破了一个气球。
2
[N-COUNT 可数名词]热气球 A balloon is a large, strong bag filled with gas or hot air, which can carry passengers in a container that hangs underneath it.
[also by N]
They are to attempt to be the first to circle the Earth non-stop by balloon.
他们试图完成乘热气球不间断环球飞行的创举。
3
[VERB 动词]（数量）激增，猛涨，快速膨胀 When something balloons, it increases rapidly in amount.
[V]
[V to n]
In London, the use of the Tube has ballooned...
在伦敦，坐地铁的人激增。
The budget deficit has ballooned to $25 billion...
预算赤字已经猛增到250亿美元。
Oxford
bal·loon/bəˈluːn; NAmEbəˈluːn/
noun
,
verb
balloonballoonsballoonedballooningnoun _airship_comp.jpg _hotairballoon.jpg 1a small bag made of very thin rubber that becomes larger and rounder when you fill it with air or gas. Balloonsare brightly coloured and used as decorations or toys. 气球◆to blow up/burst/pop a balloon吹起气球；使气球爆裂☞compare
trial balloon
2(alsohot-ˈair balloon)a large balloonmade of strong material that is filled with hot air or gas to make it rise in the air, usually carrying a basketfor passengers 热气球IDIOMwhen the balˈloon goes up( BrE) ( informal) when the trouble that you are expecting begins 意料中的麻烦出现时；（不出所料）出乱子时☞more at
lead
2verb1[intransitive ]balloon(out/up) to suddenly swell out or get bigger （突然）膨胀，涨大◆Her skirt ballooned out in the wind.她的裙子让风吹得鼓起来了。2[intransitive ](usuallygo ballooning )to travel in a hot-air balloonas a sport 乘热气球飞行bal·loon/bəˈluːn; NAmEbəˈluːn/
LDC
balloon1 noun
balloon2 verb
balloonbal‧loon1 /bəˈluːn/ ●●○ noun [countable]
Word Origin
Examples
word sets
Collocations
Phrases
1balloon (1)an object made of brightly coloured thin rubber, that is filled with air and used as a toy or decoration for parties: Can you help me blow up these balloons? He burst the balloon in my face.2 (also hot-air balloon) a large bag of strong light cloth filled with gas or heated air so that it can float in the air. It has a basket hanging below it for people to stand in: a balloon flight over the Yorkshire Moors3the circle drawn around the words spoken by the characters in a cartoonSYN bubble4a balloon payment American English money borrowed that must be paid back in one large sum after several smaller payments have been made: a $10,000 balloon payment due in two years5the balloon goes up British English informal used to refer to the moment when a situation starts to become really bad: We’ll have to get out of there before the balloon goes up. → go down like a lead balloon
1to suddenly become larger in amountSYN explode: The company’s debt has ballooned in the past year.2if someone balloons, they suddenly become fat: Paul ballooned after he got married.3to get bigger and rounder: The sheet flapped and ballooned in the wind.