On the Chicago Board of Trade, corn futures for May delivery were at $6.95 per bushel on Thursday, up 2 per cent.

周四，芝加哥交易所5月份交割的玉米期货价格为每蒲式耳6.95美元，上涨2%。

Trading on the floor, down in the pit, might have been exciting during this era, but today the Chicago Board of Trade floor is silent.

在那个时代，也许在场内交易很刺激，但是现在的芝加哥交易所场内很安静。

Still, a bushel of corn that sold for two dollars and 12 cents in January, 2005 went for almost six dollars ($5.97 on the Chicago Board of Trade) at Friday's close.

但是，在2005年1月，一蒲式耳的玉米仅为2.12美元，但上星期五芝加哥期货交易所收盘时，每蒲式耳的玉米价格为5.97美元。

The Chicago Board of Trade is one of the largest exchanges for futures trading, and one of the oldest.

芝加哥期货交易所是最大的同时也是最老的期货交易所之一。

Corn, wheat and soybean futures on the Chicago Board of Trade were all up at least 49 percent in the past year as of yesterday. The U. S. is the world's biggest exporter of all three crops.

去年芝加哥交易所玉米小麦和大豆期货至少上涨49%，而美国是世界最大玉米小麦大都出口商。