[] the act of sending items by mail邮寄；投递◆the mailing of invoices to customers客户发票的寄送◆Mailing costs have risen dramatically.邮寄成本大幅度上升。◆a mailing address邮寄地址 (NAmE alsoˈmailer) [] an item that is sent by mail, especially an advertisement that is sent to a large number of people邮件，邮寄品（尤指一次寄发的大量广告邮件）◆The service will be marketed through mailings to selected clients.此项服务将通过向精选客户发送邮件的方式推销。◆a mass mailing邮件群发