However, if no write activity has taken place on the disk since the deletion, it is possible to attempt to undelete the file using a product called DFU, available from the Freeware CD.是什么意思_However, if no write activity has taken place on the disk since the deletion, it is possible to attempt to undelete the file using a product called DFU, available from the Freeware CD.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句