It is also pretty clear that for some after the foundation of the polis, there were no city walls.

而且很明显,在城邦建立起来之后的相当长的一段时间内,都没有城墙

耶鲁公开课 - 古希腊历史简介课程节选

But it's going to take a long time, I think.

虽然这会花费很长的一段时间。

观众是我的动力 - SpeakingMax英语口语达人

There has been a long tradition of interpreting the deed or the sin of Adam and Eve as sexual, and there are some hints in the story that would support such an interpretation.

很长的一段时间中，我们把亚当夏娃所犯的原罪,解释为他们之间的性举动，这个故事中，有些暗示,与这种解释，不谋而合。

耶鲁公开课 - 旧约导论课程节选

Now, for a long time in American scholarship and in American classrooms one of the deep mythologies about this whole story of the era of the American Civil War in the Old South is that the Old South's plantation economy was dying out.

在很长的一段时间中,美国学术界和美国课堂,对于这个时代内战前的南方历史,存有一个疑点,就是当时南方的种植园经济正在逐渐衰退

耶鲁公开课 - 美国内战与重建课程节选

One of the big arguments that is part of this story is when did this development of new way of fighting come about; rather quickly, over a matter of a few years, or did it stretch out over quite a long time.

人们对此最大的争议就在于,这种新型战斗方式是何时为军队所用的,是在短短几年内迅速发展起来的呢,还是在很长的一段时间逐步形成的呢

耶鲁公开课 - 古希腊历史简介课程节选