in the mean time的用法和样例：
- At that time he was the chair of the department.
- Tourism was then still in its infant stage.
- I must find out which of them was in the right.
- I'm sorry, but that's our busiest time of the year.
- My free time does not coincide with his.
- I have too many irons in the fire.
- In the meantime Japan's economy stagnated.
- I want to keep away from the world while I am here.
- in the meantime 与此同时