a complicated machine的用法和样例：
- A peasant may seem like the smartest man in the world by coaxing crops from unfertile ground, but he may appear like a perfect idiot when asked to cope with a complicated machine.
- The old wove what he said into a complicated story.
- Obtaining a refund from the company is a complicated procedure.
- He can fix any kind of complicated machine.
- She knows how to cope with a complicated situation.