out and in的用法和样例：
- I don't mind the children's comings and gongs.
- We saw the comings and goings of the visitors from our window.
- Many cars were moving in and around the station.
- We learn English in class as well as out of class.
- The house has been given a thorough cleaning inside and out.
- I sent the car down for repairs and sales asked me to wait for 2 weeks!
- In regard to his suggestions we shall discuss them fully.
- Under the hot lights, my bad girl side really came out.