In the past, the region had been protected by its forbidding geography and the extremities of its climate.

过去，这个地区受到令人生畏的地理条件和极端的天气状况的保护。

《柯林斯英汉双解大词典》

Slabs of rock had slipped sideways in the remote past and formed this hole.

在遥远的过去，大块的岩石向旁边滑落，形成了这个洞。

《柯林斯英汉双解大词典》

'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.

I have eaten是动词eat的现在完成时；I had eaten是过去完成时；I will have eaten是将来完成时。

《牛津词典》

She said that women had played an important part in Cherokee government and tribal life in the past.

VOA: special.2010.04.09

As I say, the syllabuses should be accessible on the Classsv2 server; however, I've had problems with that in the past and you should please let me know if it's not.

你们可以在2号课程服务器上下载大纲;,不过我曾经下载不了,如果现在还不能下的话，一定要告诉我。

耶鲁公开课 - 现代诗歌课程节选

For instance in the past, we had that silly little program for computing the average of some quizzes and it was actually a pretty bad implementation because I had essentially hard coded in the number of quizzes.

比如在以前，我们做了一个,计算平均数的程序,这是一个相当挫的实现,因为我硬编码了测试的数字。

哈佛公开课 - 计算机科学课程节选

She said armed conflict was in the past and had no place in the present.

BBC: Martin McGuinness in Easter Rising commemoration warning

He had tried countless diets in the past, and had joined a handful of gyms, that he paid for despite never going.

CNN: From 'sumo wrestler' to distance runner

The San Francisco Symphony's Mr. Theil said ticket sales have grown more slowly than in the past and that the orchestra had seen a shift away from season subscriptions and toward one-time and last-minute purchases that are costlier for the symphony to sell.

WSJ: San Francisco Symphony Strike Drags On