'this offer is conditional on the buyer obtaining, at his own expense,a new first mortgage at current rate, the proceeds of said mortgage shall be paid to the seller on completion of this transaction,should the buyer not obtain the new first mortgage within(5)five banking days of the acceptance of this offer by the seller,then the offer shall become null and void, and the buyer's deposit shall be returned to the buyer in full without interest, the buyer reserves the right to wave this condition at his sole option.' 什么叫' new first mortgage' 是不是我找的第一个bank 拒了我,我就有权要回我的deposit.急得很, 在线等候您的答复谢谢