法律英语词汇“preexisting-duty rule”的翻译、意思、用法、释义-法律词典

单词	preexisting-duty rule
释义	preexisting-duty rule 既有义务规则合同法上的一项规则，指如果一方当事人履行或允诺履行其本应履行的义务，该当事人并未因此而遭受损害。其中本应履行的义务，既可以是作为的义务，也可以是不作为的义务。既有义务规则的运用，意味着履行既有义务的允诺并不构成合同的有效对价。
随便看	Felix qui potuit rerum cognoscere causas. fellatio fellow fellow-heir fellow servant doctrine fellow servant rule fellow servant(s) felo felo de se felon felonia feloniae cepit et asportavit Feloniae， per quas vasallas amitteret feudum. Felonia implicatur in qualibet proditione. Felonia， ex vi termini，significat quodlibet capitale crimen felleo animo perpetratum. felonice felonice abduxit unum equum felonice cepit felonious felonious assault felonious entry felonious homicide felonious intent feloniously feloniously and burglariously

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