<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><div>hi,all</div><div>please tell me what is volume ,image and their relation.i do not fully&nbsp;understand them via code</div><div>&nbsp;</div><div>thanks</div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>