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English definition of “on the back of an envelope”

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on the back of an envelope

in a hurried way, without much detail: The prices were very roughly calculated - it looked as though he'd done them on the back of an envelope.
Translations of “on the back of an envelope”
in Chinese (Traditional) 匆忙地, 粗略地…
in Chinese (Simplified) 匆忙地, 粗略地…
(Definition of on the back of an envelope from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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