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guaranties的音標：...

n.保證( guaranty的名詞復(fù)數(shù) )，保證書，擔保物，抵押物...

Therefore, in its origin, Standby was a substitution of bank guaranties.因此, 從起源上來講, 備用證的產(chǎn)生是出于替代銀行保函的目的....