It is estimated by the foreign authoritative person that it is probable to use polyformaldehyde as a large amount of general-purpose material next century.是什么意思_It is estimated by the foreign authoritative person that it is probable to use polyformaldehyde as a large amount of general-purpose material next century.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句