这些指控到现在已经持续有一段时间了，但那不过是酸葡萄心理而已。

These accusations have been going on for some time now, but it is just sour grapes.

《柯林斯英汉双解大词典》

我加入他们时，我意识到她已经无家可归有一段时间了。

When I joined them, I realized that she had been homeless for some time.

youdao

已经有一段时间了，不是吗？

For quite some time already, hasn't it?

youdao

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