This is in contrast with an overdraft which is subject to periodic review and is in principle recallable at any time . 这同透支不向，透支要接受定期检查，且在原则上可随时要求还款。
2.
Once the system has flaws in the implementing process , we can rectify them with “ invalid ” and “ recallable ” systems . this system should be used for reference and transplanted by chinese corporation law 一旦该制度在实施过程中存在瑕疵,则可通过“无效”和“可撤销”制度矫正。
