In electronic marketplaces, the buyer and seller can be seen as agents who participating continuous double auctions(CDA).

电子市场中的买卖双方达成交易的过程可以看作是一个连续双向拍卖（CDA）协议。

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In electronic marketplaces, sellers and buyers can negotiate, submit bids, place an order and finish the execution online or office.

在电子市场买卖双方可以进行谈判、提交报价、下订单并且上线或离线完成交易。

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In electronic marketplaces, sellers and buyers can negotiate, submit bids, place an order and finish the execution online or offline.

在电子商务市场中，买家和卖家可以在线或离线谈判，投标，下订单，完成执行的任务。

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The joke is that with so much of the trade now electronic and at other marketplaces, the trading floor on Wall Street is primarily a backdrop for CNBC.

FORBES: Selling America