But, you can see that he was thinking about this structure for all along.

但我们可以想象得到,他对这个结构的思考已经有很长一段时间了。

麻省理工公开课 - 固态化学导论课程节选

Yes. Most of our clients are people who have been living in an apartment or in a house for a while

好的。绝大多数委托人都是在公寓或者住所内居住有一段时间了，

我帮助过的人们 - SpeakingMax英语口语达人

They have been in China for a very long time.

他们来到中国有很长一段时间了。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Wouldn't it be nice to be able to go someplace and just for a period think to yourself, "Well, you know, right now I don't have to worry about that.

要是能去那岂不是很好,你能有一段时间对自己说，“你知道，现在我不用担心死亡了。

耶鲁公开课 - 死亡课程节选