At the end of 1991, the securities trade center of Beijing began to deal with Repo trading.

1991年底，北京证券交易中心首次开办国债回购业务。

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The law requires the board to inspect firms that audit companies whose securities trade in the United States.

法律要求S.E.C去检查在美国进行证券交易的审计企业。

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This paper describes how to construct an E-securities trade education platform, and elucidates its function, framework and some problems needing to be paid attention to.

阐述了如何搭建电子证券教育平台，详细说明了整个系统的功能、结构和需要注意的问题。

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You have closed end funds, trade as a security listed on the stock exchange, but what they do is own other securities.

假如你持有封闭式基金，这种基金在证券交易所作为一种债券进行交易，但是实际上它们做的是持有其他债券。

耶鲁公开课 - 金融市场课程节选

"We believe the markets will be better when all securities trade most often in all-electronic markets, " he says.

FORBES: Intelligent Investing Briefing Book

The riskiest mortgage-backed securities trade at around 40 cents on the dollar.

ECONOMIST: The credit squeeze

These securities trade on U.S. markets and you can buy and sell them directly from your broker as you would any other stock.

FORBES: Magazine Article