They have been missing for a long time now.

到现在他们已经失踪很长时间了。

《柯林斯英汉双解大词典》

For a long time his death was concealed from her.

他的死瞒了很长时间都没告诉她。

《牛津词典》

We have known each other socially for a long time.

我们在社交场合相识有很长时间了。

《柯林斯英汉双解大词典》

For the best results, carrots should be grown in sandy soil that does not hold water for a long time.

VOA: special.2009.02.24

And the Aristotelian view held for a long time, but eventually it started to crumble in the light of more data.

而亚里士多德的观点在很长时间里得到了认同，但最终还是崩溃了,在越来越多的数据面前。

麻省理工公开课 - 固态化学导论课程节选

I don't know if you know this, but for a long time when movies took place in New York,

我不清楚你是否知道，很长一段时间，电影里发生在纽约的场景，

电影里的中央车站 - SpeakingMax英语口语达人

The implication being that they will forfeit co-operation with Russia for a long time ahead.

CNN: Analysis: Can Europe stand firm against Russia?

Actor NT Rama Rao ruled over the Andhra Pradesh state for a long time.

BBC: Poonam Dhillon

"I think it's what Dundee has been needing for a long time, " he adds.

BBC: What's in a street name?