The contractual promise is not supported by consideration.合同的承诺没有被对价所支持。
You have a contractual obligation to finish the building this month.你受合同的约束，要在本月完成这项建筑。
Transactions encounter difficulties because of contractual incompleteness.由于契约的不完全性，交易遇到了困难。
The combination of these two contractual methods will reduce both distortional incentive and reneging temptation during the incentive process.在解决激励问题中应对正式契约和关系契约的合理运用进行综合权街。
