A reservation purports to exclude or modify the legal effect of certain provisions of a treaty or of the treaty as a whole with respect to certain specific aspects in their application to the State or to the international organization which formulates the reservation.
保留的目的，是为了排除或更改条约中某些规定或整个条约的特定方面对提出保留的国家或国际组织适用时的法律效力。