passbook savings的用法和样例：
例句
- With a regular passbook savings account, you would be able to withdraw money whenever you needed it.
有了定期存折储蓄账户，无论你何时需要都能够取款。 - However,the costs of processing demand deposit transaction are increasing,and the effective overall cost of demand deposits is closing to the cost of passbook saving.
然而，处理活期存款的交易成本在不断上升，因此活期存款实际总成本已接近存折储蓄的成本。
