Stock exchanges have agreed to temporarily halt trading of any stock that rises or falls 10% or more within 5 minutes.

股市交易规定，五分钟内涨跌幅超过10%的所有股票可以暂时停止交易。

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The broad-based buying became so frantic in the afternoon that the South Korean exchange was forced to halt trading for five minutes.

当天下午买气一片疯狂，迫使韩国股市交易一度停顿了五分钟。

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Under a new system of "circuit breakers" for individual stocks put in last month by the SEC, U.S. stock exchanges must briefly halt trading of major stocks that mark big swings.

上周证券交易委员会推出了针对单个股票，名为“断路器”的新制度：一旦市场出现异动，美国证交会可以短暂停止主要股票的交易。

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Stock exchanges have agreed to temporarily halt trading of any stock that rises or falls ten percent or more within five minutes.

VOA: special.2010.05.21

In addition, procedures to halt trading if prices show too much volatility in a short period of time have been implemented since the flash crash occurred in 2010.

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Although the secondary market is still young, it is routine for companies to halt trading before an IPO to have time to account for its current shareholder base, said a person familiar with the secondary market.

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Analysts also point out that the markets have other safeguards to keep them from falling too sharply, with circuit breakers that halt trading on the Dow Jones industrials after falls of 850, 1, 750 and 2, 600 points.

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