Word forms: plural, 3rd person singular present tense balloons, present participle ballooning, past tense, past participle ballooned
1N-COUNT 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. 气球
She popped a balloon with her fork.
她用叉子戳破了一个气球。
2N-COUNT [oft byNOUN]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. 热气球
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。
SYN airship, hot-air balloon, Montgolfier, weather balloon
3VERB (数量)激增,猛涨,快速膨胀 When something balloons, it increases rapidly in amount. (数量)激增,猛涨,快速膨胀
In London, the use of the Tube has ballooned. [VERB]
在伦敦,坐地铁的人激增。
The budget deficit has ballooned to $25 billion. [VERB + to]