a walking skeleton的用法和样例：
- Chisato wore a leather jacket accented with white bones that made him look like a walking skeleton from waist to shoulders.He too wore nearly invisible leather shorts, showing off long, bare legs.
- The poor old man was just a walking corpse.
- She's a walking textbook of medicine.
- She is, as it were, a walking dictionary.
- Let's go for a walk and blow the cobweb away.
- Mr.Johnson was known as a walking dictionary.