Again, I don't have data to back this up, but just common sense suggests to me that the common case is if I'm on the subway platform I want to get on that train and maybe I want to get back and where are those two buttons, right?

此外，我没有数据来备份这个，但是常识告诉我，常见的情况是,如果我站在地铁站台上，我想乘上地铁,可能我还想回来,那么哪里能找到这两个按钮，对不？

哈佛公开课 - 计算机科学课程节选

But to find a common denominator where we can all talk, where we don't find ourselves divided by religion or culture anymore, because we've got down something so essential.

我们所找的共通之处可以使我们彼此交流，让我们发现我们,不再被宗教与文化分隔开来，因为我们已经获得了最本质的东西。

普林斯顿公开课 - 人性课程节选

And it became common to reject any ancient story that wasn't really nailed down very, very firmly by some device.

越来越多的人开始不相信那些远古的故事,因为它们没有确凿的证据和可靠的说法

耶鲁公开课 - 古希腊历史简介课程节选

An increased sensitivity to light or sound can occur with a tension headache, but these aren't common symptoms.

CNN: Tension headache

But this method isn't common yet in smartphones because the technology hasn't quite caught up to the tiny gizmos.

CNN: RIM's BlackBerry hits a technical crossroad

Prosecutions weren't common 25 years ago, but today, "more of these guys are going away" to prison, Mr. Allen said.

WSJ: Penn State Case Underscores How Society Deals With Sexual Assault