A third of its property for the debtor provides the security act beneficial to the debtor, not to withdraw. Thirdly, it is the right to revocation of the exercise.
在撤销权之诉的举证责任分配上,债务人负有证明其处分财产的行为不构成对撤销权人债权侵害的义务。
参考来源 - 债权人撤销权法律问题研究·2,447,543篇论文数据，部分数据来源于NoteExpress
It finds that right of offer revocation lead to awful problems in two hands.
或者说要约撤销制度存在什么问题吗?。
The right of revocation relates to the consensual characteristic of donation contract closely, and it is the remedy to relieve the burden of the donator after the conclusion of contract.
赠与人的任意撤回权与赠与合同的诺成性攸关，是旨在弥补赠与被立法确认为诺成合同后对赠与人要求过苛的弊端而设计的救济性手段。
But the gift contract is a unilateral and gratuitous contract. So to protect the donator's benefit the Law should allow the donator to have the right of revocation in some special situation.
但因赠与合同系单务、无偿合同，所以为维护赠与人的利益，法律应于特殊情形下，允许赠与人撤销赠与。
应用推荐