for a while
有一段时间我跑船之后,没什么联络了
For a while after I went to sea, we lost touch.
— 阿飞正传 (1990)
他在这儿住了有一段时间了。
He has been living here for quite some time.
有一段时间他常常送我回家
For a while, he often walked me home.
— A Sun (2019)