a poor relation

• 穷亲戚

a poor relation的用法和样例：

例句

1. He did well by his poor relatives.
   他对他的穷亲戚很慷慨。
2. There are so many poor branches of my family.
   我家那头有许多穷亲戚。
3. In areas of poor water quality, isolation protects the collectors from fouling by minerals in the water.
   在水质较次的区域，隔离保护收集器，以防止由于水中的矿物造成的污染。