买方所付之款项系为一份应于订立后再履行而卖方尚未履行的契约而约付的预付款。
The payment by the buyer was therefore an advance payment for an executory contract which the seller had not performed .
买方所付之款项系为一份应于订立后再履行而卖方尚未履行的契约而约付的预付款。
The payment by the buyer was therefore an advance payment for an executory contract which the seller had not performed .
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