Bubble我們最常使用的語義就是“泡沫”，也就是水面上聚集在一起的許多泡泡。比如：champagne bubbles香檳酒的泡沫

a bubble of oxygen氧氣泡

blowing bubbles into water through a straw用吸管在水里吹泡泡

或者是“肥皂泡”肥皂泡：

The children like to have bubbles in their bath.

孩子們喜歡浴盆里有肥皂泡。

Bubble也可以延伸為比喻某一事物表面上的繁榮，而實際上虛假不實的成分；(a good or lucky situation that is unlikely to last long)

At the time the telecoms bubble was at its height.

當(dāng)時電信業(yè)的泡沫正處于極度膨脹時期。

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“As a stock market bubble is taking shape, the investors should take precautions against the risks.”股市泡沫正在形成，投資者應(yīng)該防范風(fēng)險。

另外，還有比較少用一層意思：（欲表達(dá)的）一點感情

（a small amount of a feeling that sb wants to express）

a bubble of laughter/hope/enthusiasm

一點笑聲╱希望╱熱心

經(jīng)濟(jì)泡沫也是翻譯為”economic bubble”，而“泡沫經(jīng)濟(jì)”翻譯為”bubble economy”.

A real estate bubble is a type of economic bubble that occurs periodically in local or global real estate markets.房地產(chǎn)泡沫是本地或全球房地產(chǎn)市場周期性發(fā)生的一種經(jīng)濟(jì)泡沫。

Bubble economy usually starts with false prosperity and ends in a breakout of crises.

泡沫經(jīng)濟(jì)通常以虛假繁榮開始，以危機(jī)爆發(fā)告終。

延伸學(xué)習(xí)：

the bubble bursts（好事或好運）突然告吹，成為泡影；泡沫破滅

When the bubble finally burst, hundreds of people lost their jobs.

當(dāng)泡沫最終破滅時，有幾百人丟了飯碗。

和Bubble有相似用法的單詞還有”foam”

泡沫經(jīng)濟(jì)也可以翻譯為foamy economy。