But the torrential rains have not stopped. They are expected to continue for several more weeks, enough time to add to the already extensive damage that has occurred.

VOA: standard.2009.09.05

Milton tells himself to run, and naturally he would have to run fast indeed in order to arrive at a moment in time that had already occurred before he even set out!

弥尔顿告诉自己要跑起来了，而且他也确实不得不跑的很快,从而准时到达,他刚出发时就已经存在的目的地！

耶鲁公开课 - 弥尔顿课程节选

The idea of the immigration model is that Hebrew settlement would have probably occurred at about the same time in the latter part of the thirteenth century The Hebrews could take advantage of all of these upheavals and the weakened hold of Egypt.

移民模型的观点是,希伯来人的定居可能发生了,大约也在十三世纪后半叶,希伯来人会利用所有这些激变,以及埃及的衰落。

耶鲁公开课 - 旧约导论课程节选

So, the process of developing a vaccine occurred over a long period of time.

疫苗的发展经历了很长一段时间

耶鲁公开课 - 生物医学工程探索课程节选

The amount of food available is striking, I mean in the period of time I was--since I was a child there are a lot of changes that have occurred, and I mentioned some of this in the last class-- but when I was a child you didn't have rows and rows of food at a drugstore.

现有粮食的数量是惊人的,当我还是小孩的时候,身边就发生了很多变化,我上节课曾提到过一些,在我小的时候,药店里还没有满货架的食品

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选