The semiretired chairman of the board of the brokerage firm was a longtime trader with nearly 40 years of experience in the grain pits at the Chicago Board of Trade.是什么意思_The semiretired chairman of the board of the brokerage firm was a longtime trader with nearly 40 years of experience in the grain pits at the Chicago Board of Trade.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句