A childless couple的用法和样例：
- A childless couple adopted the half-breed.
- "It's true I'm doing this for money, but is it also not true that a childless couple is benefiting?
- As a rule of thumb, economists reckon that a family with one child needs 30% more income than a childless couple to maintain the same living standard.
- He was fond of drawing when he was a child.
- She was vaccinate against smallpox as a child.