盖邮戳于。；盖邮戳以注明邮寄日期和时间；盖邮戳于
to stamp mail with a postmark showing the place and date of mailing
盖邮戳于。
To apply a postmark on.
盖邮戳以注明邮寄日期和时间
stamp with a postmark to indicate date and time of mailing
一般现在时
The clerk postmarks every letter before sending.
职员在寄出每封信前都盖上邮戳。
一般过去时
She postmarked the package yesterday afternoon.
她昨天下午给包裹盖了邮戳。
现在完成时
They have already postmarked all the envelopes.
他们已经给所有信封盖了邮戳。
规则动词，过去式和过去分词加-ed。
The clerk postmarked the letter immediately after I handed it over.
我递过信后，职员立刻盖上了邮戳。
用法提示：动词postmark在这里表示在信件上盖邮戳，使用过去式postmarked。
Please ensure all parcels are postmarked before the deadline.
请确保所有包裹在截止日期前盖上邮戳。
用法提示：动词postmark使用被动语态are postmarked，表示被盖上邮戳。
She forgot to postmark the envelope, so the recipient couldn't tell when it was sent.
她忘记给信封盖邮戳了，所以收件人无法知道寄出时间。
用法提示：动词postmark用不定式形式to postmark，表示忘记做盖邮戳这个动作。
Choose the next layer that will help you use postmark with more confidence.
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Dictionary facts from ECDICT, WIKTIONARY.
