ordinary postage
... 平信 ordinary mail 普通邮资 ordinary postage 气袋式邮件升运机 mail air-bag elevator ...
基于20个网页-相关网页
普通邮资明信片 Regular Stamped Postcard ; Postcard
普通邮资邮简 Regular Stamped Letter Sheet
普通邮资信封 Regular Stamped Envelope
把电子邮件看做普通邮资明信片更合适，而不是密封信。
It's more appropriate to treat emails as postcards, rather than sealed letters.
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