Every once in a while we'll bring up an issue of well, how has this been interpreted over the centuries?

偶尔我们会提到，几个世纪以来是如何解读的？

耶鲁公开课 - 新约课程节选

We have kind of a slowing economy either because of that or because the economy kind of slows every once in a while.

我们的经济发展缓慢或者因为,上述原因或者因为我们的经济,偶尔陷入缓慢发展的泥潭。

耶鲁公开课 - 金融市场课程节选

So after about a month, I started to, once in a while, experience some envy toward David.

一个月后，我开始偶尔，对David产生一种嫉妒。

哈佛公开课 - 幸福课课程节选