be responsible for one's own finance

例句：

1. 1. As a responsible citizen, I always make sure to pay my bills on time.
   作为一个负责任的公民，我总是确保按时支付我的账单。
2. 2.The company is responsible for the safety of its employees.
   该公司对其员工的安全负有责任。
3. 3. He was responsible for the accident, but he didn't know what caused it.
   他对这个事故负有责任，但他不知道是什么导致了它。