Except as stated in 93, a promise to perform all or part of an antecedent contract of the promisor, previously voidable by him, but not avoided prior to the making of the promise, is binding.

• 除93条的规定外，许诺全部或部分履行先前合同的，若诺言人有撤销权但许诺前尚未撤销的，诺言有拘束力。