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proof of damage
proof of death
proof of deducibility
proof of delivery
proof of existence
proof of export
proof of handwriting
proof of innocence
proof of journal
参考
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DE↔EN LEO
DE↔EN Langenscheidt
DE↔EN PONS
DE↔EN Beolingus
DE↔EN dict.cc
proof of existence
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proof of existence
Definitions
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存在性证明
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proof of existence