Until and unless the plaintiff could establish that there was no sum due to the first defendant under the sub-contract, the plaintiff did not have a valid claim against the first defendant in respect of the loans.
除非原告能够证明没有在分包合同项下欠第一被告任何款项，以及在做到这点之前，原告对于这两项借款对第一被告没有可以成立的权利主张。