They buy the most common type from MDS Nordion in Kanata, Ontario, or the Uniersity of Missouri Research Reactor Center.是什么意思_They buy the most common type from MDS Nordion in Kanata, Ontario, or the Uniersity of Missouri Research Reactor Center.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句