time transaction的用法和样例：
例句
- But starting August first, the Chicago Board of Trade will begin using a new electronic system at the same time.
但是从八月开始，在使用公开叫价方式的同时，芝加哥期货交易所将会开始使用新的电子叫价系统。 - Whether a futures company or client has made an overdraft transaction shall be determined on the basis of the proportion of margin set forth by the futures exchange.
审查期货公司或者客户是否透支交易，应当以期货交易所规定的保证金比例为标准。
