私房钱

例句：

1. 1. She has been saving up for a new car for months.
   她几个月来一直在存钱买新车。
2. 2. He decided to use his private money to pay for the repairs.
   他决定用自己的私人资金支付修理费用。
3. 3. They saved up enough money to buy a house together.
   他们攒够了钱一起买了一所房子。