- 释义：
- conj. 当…的时候；而
- 例句：
-
While climbing up the stairs the old man always loses his breath.
那老人上楼时总是气喘吁吁的.
换一句
-
He took the liberty of using my refrigerator while I was away.
我不在的时候他擅自使用了我的冰箱.
换一句
-
We went into town and mooched about for a while.
我们到城里逛了会儿街.
换一句