单词：in a while
马上,不久,不一会儿
in a while的用法和样例：
例句
- She looked in on us [at our office]once in a while.每隔些时候，她都到我们这儿[办公室]来一趟。
- Once in a while he goes with us to the movies on Saturday night.偶尔在星期六晚上他同我们一道去看电影。
- Once in a while we go to a restaurant but usually we eat at home.我们偶尔下馆子--但一般都在家吃。
- While reading he looked out of the window once in a while.他正在读书，有时还朝窗外看看。