A fresh supply of yellow froth (probably the same type of elemental sulfur found in the "cool acid-brine" crater lake at Kawa Ijen) is brought up by the plume and pushed out toward the crater wall.

一个新的黄色气泡(与在Kawa Ijen“冷酸海水”火山湖中的元素硫是同一类)是由热烟柱带出湖面，并推向岩壁。

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Bank lending should also be constrained during periods when asset prices are booming - when the froth is piling up.

当资产价格暴涨时，泡沫到处都是，但越是这样的时期，银行发放贷款就越应当得到约束。

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Two years ago Franck Riboud, the boss of Danone, a French food group, was able to whip up a froth of economic nationalism to ward off the mere threat of a takeover by America’s PepsiCo.

两年前，达能集团是法国一个食品集团公司。 公司老板Franck Riboud高喊国家经济主义的口号，就是为了挡住美国PepsiCo公司的接管威胁。

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They can console themselves with the thought that much of the froth was whipped up by a temporarily under-employed newspaper industry that will move on swiftly to the next target.

ECONOMIST: Don��t mention the war

Twitter's effort to woo small advertisers, begun in December, comes amid investment froth around the start-up.

WSJ: To Grow Big, Twitter Seeks Small Ads

Already, some investors worry that stocks are rising too far too fast, and the BOJ is merely stirring up another round of speculative froth.

WSJ: Japan's Mrs. Watanabe Decides It's Time to Buy Stocks