股票曾经是通过公开喊价系统交易，证券交易所的交易员直接报出股价。

Once, stocks were traded through the open outcry system, with men Shouting share prices on the floors of stock exchanges.

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Twitchange是一项为期10天的拍卖活动，本次活动由eBay承办，网友可以通过eBay的在线拍卖系统Kompolt进行竞拍，拍卖已于上周末结束。 参加本次拍卖的有著名演员、音乐家和体育明星等100多位社会名流，每个人都可以对他们自愿提供的推文喊价，价高者得。

Twitchange was a 10-day auction that ended last weekend where anyone could bid on more than 100 famous actors, musicians and sports stars volunteering their tweets.

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公开喊价和电子交易的设施是由以计算机为基础的系统来进行交易指令传递、执行、匹配的。

Many electronic trading facilities are supported by computer-based component systems for the order-routing, execution or matching of trades.

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