(in the UK)guaranteed delivery of a letter within the UK the day after posting
(英国)信件特别快递(保证国内信件寄出的次日即投递到人)。
(in the US)delivery of mail outside normal hours on payment of an additional fee
(美国)(正常投递时间以外加资的)特种快递。
[count noun]a letter or parcel sent by a special-delivery service
特种快递信件(或包裹)。
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