It is estimated that there will be 1,500 volunteers who will serve the competition directly during the 2007 Qingdao International Regatta.是什么意思_It is estimated that there will be 1,500 volunteers who will serve the competition directly during the 2007 Qingdao International Regatta.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句