a ruddy complexion的用法和样例：
- Thanks to his persistent physical exercise, he looks healthy, with white hair and a ruddy complexion.
- There is an elderly gentleman waiting for you outside the door. He has a ruddy complexion on his hoary head.
- A ruddy complexion.
- One of the two was an old fellow with a long white goatee beard straggling down to his chest, a ruddy complexion that belied his age, and a firm skin without the slightest trace of a wrinkle.
- A ruddy complexion and a hoary head