求翻译：1973年4月，芝加哥交易所(CBOT)成立了一个新的交易所——芝加哥期权交易所， 特别用来交易股票期权。从此以后，期权交易在投资者当中日益普及。美国股票交易所 (AMEX)和费城股票交易所(PHLX)从1975年开始期权交易。太平洋股票交易所(PSE)从 1976年开始期权交易来到了80年代初期期权交易规模越来越大每日卖出的期权合约规定的标的股票总数超过了纽约股票交易所日交易量。是什么意思？

In April 1973, the Chicago Board of Trade (cbot) set up a new Exchange - Chicago Board Options Exchange, in particular, used to trade stock options. Since then, the options trading among investors become increasingly popular. The American Stock Exchange (amex) and Philadelphia Stock Exchange (phlx)

April 1973, Chicago Board of Options Exchange (CBOT) has set up a new Exchange, Chicago Board Options Exchange - used for the transaction, in particular stock options. Since then, options trading is becoming increasingly popular among the investors. The American Stock Exchange (AMEX) and the Philade

In April, 1973, Chicago exchange (CBOT) has established a new exchange - - Chicago option exchange, uses for the transaction stock option specially.From now, the option transaction day by day popularizes in the middle of th

In April 1973, Chicago (CBOT) set up a new Exchange--the Chicago Board Options Exchange, used especially for trading stock options. Since then, options trading as investors become increasingly popular. United States stock exchange (AMEX) and Philadelphia Stock Exchange (PHLX) starting from the 1975