| 释义 |
fourth-class AHD[fôrthʹklăsʹ, fōrthʹ-] D.J.[ˈfɔːθˈklæs, ˈfəʊrθ-]K.K.[ˈfɔrθˈklæs, ˈforθ-]adj.（形容词）- Of or being a class of mail consisting of merchandise and some printed matter weighing over eight ounces and not sealed against inspection.第四类邮件的：内含商品和印刷品超过8盎司以上的不封口的邮件的
adv.（副词）- As or by fourth-class mail.作为第四类邮件的
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