a walking holiday的用法和样例：
- We spend two weeks on a walking holiday in north Italy.
- A youth hostel is a place where esp. young people stay when they are on a walking holiday.
- I felt as fit as a fiddle after my walking holiday.
- A youth hostel is a place where young people stay when they are on a walking holiday.
- A man was on a walking holiday in a foreign country. He became thirstyso decided to ask at a stranger's home for something to drink.