bubble
n. /ˈbʌbl/ B1
气泡；水泡
A small ball of air or gas inside a liquid or floating in the air.
仙境例句
Down went Alice under the water, and up came one big bubble.
爱丽丝沉到水下，水面上冒出了一个大气泡。
巴菲特芒格原话
I mean, we will have bubbles in capitalism.我的意思是，在资本主义制度下，泡沫是必然会出现的。
Warren Buffett · 2013