----=_33dea5a67897769009c9044.MFSBCHJLHS
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit

                              MIME for
       Encoding for           Non-ASCII  Attachment
夹档   Main Body              Headers    Format
----   ---------------        ---------  ----------
d.zip  7bit/8bit              No         MIME

中文看到吗？

----=_33dea5a67897769009c9044.MFSBCHJLHS
Content-Type: application/zip; name=d.zip
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=d.zip

UEsDBAoAAAAAAEBE/iLOXp/NDAAAAAwAAAAFAAAAZC50eHSkpKTlrN2o7LbcoUhQSwECFAAKAAAA
AABARP4izl6fzQwAAAAMAAAABQAAAAAAAAAAACAAAAAAAAAAZC50eHRQSwUGAAAAAAEAAQAzAAAA
LwAAAAAA

----=_33dea5a67897769009c9044.MFSBCHJLHS--