a week-long national holiday的用法和样例：
- Xiaozhang is planning to spend the long national holiday travelling abroad.
- In this country New Year's Day is a national holiday.
- Nimes any doctor in a week long working hours are not more than 15 hours, but six months Beilan week reached a 40-hour workload.
- He took sick and died a week later.
- She writes to her parents once a week.