Since 2000, Siemens has supplied the process automation systems for two-thirds of the fuel ethanol plants built in the U.S.是什么意思_Since 2000, Siemens has supplied the process automation systems for two-thirds of the fuel ethanol plants built in the U.S.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句