There's never been a successful third-party political culture take hold in this country without one really big issue to drive it.

美国就从没有过,第三政党真正成功执政的时候,因为缺乏一个真正重大的议题来支持它

耶鲁公开课 - 美国内战与重建课程节选

But whenever we've had a reform era there's been a big issue, or two or three or four.

但每当我们有一个改革的时代,都会存在一个,两个,三个或者四个大问题

耶鲁公开课 - 美国内战与重建课程节选

That's a big issue. You can fix one thing, you break something else.

你可以解决一个问题，但你破坏了其它的程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

And so the big issue is -- this is what you must never do, but this is what you got to do if your phalanx is broken.

所以现在的大问题是,这也许是你在战场上永远不能做的事,但你在方阵被打散时不得不这么干

耶鲁公开课 - 古希腊历史简介课程节选