One trigger for this could be a sharp economic slowdown.

这一旦触发就可能产生一次经济急剧放缓。

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Stockmarkets around the world surged yesterday to record highs as investors increased their bets that the summer's credit squeeze would not trigger a sharp global economic slowdown.

全球股市昨日纷纷创下历史新高，原因是投资者越发认定今夏的信贷危机不会引发全球经济大规模减速。

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That would trigger a sharp fall in demand for Saudi oil.

那将引发世界各国对沙特原油的需求量急速下滑。

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Moroney cautions that earnings disappointments by high-flying techs and biotechs could trigger sharp declines in those stocks--a thought echoed by the triumvirate of editors at Wall Street Winners.

FORBES: Earnings-Safe Stocks

The index is set to replace the Dow average on April 8 as the index whose action will be monitored for the sharp swings that trigger "circuit breakers" halting all U.S. stock trading.

WSJ: S&P 500 Milestone Has More Meaning Than Dow Record for Many

Fund managers are rethinking their portfolios in the belief that "QE3" -- the Federal Reserve's third round of quantitative easing -- will weaken the dollar and trigger sharp gains in emerging market currencies.

CNN: QE3 triggers fear of new currency wars