a used-car dealer的用法和样例：
- He bought a used car from a car dealer.
- The third programme was the most alarming of the lot. A swanky firm of estate agents swapped bosses with a used car dealer.
- Don't buy a used car from that rogue.
- I can recommend a good used car dealer.
- I can fix up you with a used car.
- Do not buy a used car from that rogue.