行為基礎之變更 情事變更原則 為契約基礎之重要想法事後確認非屬正確 契約之調整 解除契約 終止契約 Interference with the basis of the contract Doctrine of changed circumstances Material assumptions that have become the basis of the contract subsequently turn out to be incorrect Adaptation of the contract Terminatation of the contract The right to terminate on notice