when excel save as csv,double quotes in an cell issue

[frank]

Hi,
When i want to save excel book as csv file , when the cell content has
doulble quotes. this double quotes will be occer twice in csv file.
For instance,
the cell content is hh"rr"ee in excel , this content in csv will be
"hh""rr""ee".
Could someone tell me why? i just know "If a cell contains a comma, the cell
contents are enclosed in double quotation marks."

thanks