词典释义：
释义
n.
the simultaneous purchase and sale of many different stocks,or of stocks and related futures contracts,with the use of a computer program to exploit price differences in different markets
程序控制交易，集总交易（借助计算机程序，利用不同市场的价格差价对多种不同股票或相关期货合同进行同时买卖）。