Once, stocks were traded through the open outcry system, with men Shouting share prices on the floors of stock exchanges.
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。
At the Chicago Board of trade, or CBOT, futures have always been traded using the open outcry system.
在芝加哥期货交易所，或者CBOT，期货一直以来都是以公开竞价的方式进行交易。
At the Chicago Board of trade, or CBOT, futures have always been traded using the open outcry system.
在芝加哥期货交易所，或者CBOT，期货一直以来都是以公开竞价的方式进行交易。
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