The contractual promise is not supported by consideration. 合同的承諾沒有被對價所支持。
You have a contractual obligation to finish the building this month. 你受合同的約束，要在本月完成這項建筑。
Transactions encounter difficulties because of contractual incompleteness. 由于契約的不完全性，交易遇到了困難。
The combination of these two contractual methods will reduce both distortional incentive and reneging temptation during the incentive process. 在解決激勵問題中應對正式契約和關系契約的合理運用進行綜合權街。