MIME for
       Encoding for           Non-ASCII  Attachment
夹档   Main Body              Headers    Format
----   ---------------        ---------  ----------
f.zip  QuotedPrintable(MIME)  No         UUEncoded

中文看到吗？

begin 644 f.zip
M4$L#!`H``````$E$_B+.7I_-#`````P````%````9BYT>'2DI*3EK-VH[+;<
MH4A02P$"%``*``````!)1/XBSEZ?S0P````,````!0```````````"``````
>````9BYT>'102P4&``````$``0`S````+P``````
`
end