Direct exchanges between the candidates and moderator follow-ups are permitted after each candidate has two minutes to answer the lead question in an order determined by a coin toss.

我们将用掷硬币的办法来决定谁先回答引导问题。在两位候选人分别回答完后，可以进行直接交流。主持人也可以进一步追问。

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Then there is a five-minute discussion period, when direct exchanges between the candidates occur.

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The October 2011 system errors at Direct Edge exchanges where, in just over four minutes, the exchanges caused about 27 million shares of excess trading.

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But really for both groups, the first thing that they need to realize is now much volume is done on venues like Direct Edge and not the legacy exchanges.

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