sparing therapy

例句：

1. 1. He is always frugal with his money.
   他非常节俭地使用他的钱。
2. 2. She is a thrifty person who always saves money for a rainy day.
   她是一个节俭的人，总是为下雨天存钱。
3. 3.The economy is in a state of scarcity, and we must be economical with our resources.
   经济处于稀缺状态，我们必须对我们的资源持节俭态度。