便函

biànhán

an informal letter sent by an organization

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an informal letter sent by sb.

【经】 memorandum

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an informal letter sent by sb.

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bian4 han2

an informal letter sent by an organization

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便函

biàn hán

an informal letter sent by an organization

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便函|便函 [biàn hán] ► an informal letter sent by an organization