"If we go into a protectionist downward spiral, we are lost,".

VOA: standard.2009.04.15

Vertically means that every class connected to the next class is connected to every class throughout the semester around a spiral.

纵向意味着每一节课都和下一节课有关系,和整个学期内的每一节课都有关系，呈一个螺旋状。

哈佛公开课 - 幸福课课程节选

Everything is interconnected on the higher level on a spiral-- in other words will lead to deep understanding and hopefully assimilation of the material.

所有内容在一个更高的水平上呈螺旋状互相联系-,换言之，会带来深刻的理解和我所希望的对材料的吸收。

哈佛公开课 - 幸福课课程节选

But the threat of terrorism, according to former Yemeni prime minister Abdul Karim al-Iryani, is equally part of the downward economic spiral causing anger on the streets of Sana'a.

VOA: standard.2010.04.20

It's an opportunity to deal with those perhaps in a more constructive way, than letting the feeling spiral.

也许可以借这个机会用更有建设性,的方法应对，而不是使负面情绪恶化。

普林斯顿公开课 - 人性课程节选

Remember I talk those of you who were here the first time: this course is built like a spiral Everything is intra-connected, what I talked about in the first class is connected to what I'm going to talk about today, is going to be connected to lecture 19.

记得一开始我就跟你们说过：,这课程就像个螺旋,内部的一切都是相关的，第一节课讲到的内容,与今天要谈的课题有关，也和第19课有关。

哈佛公开课 - 幸福课课程节选

And very often what that does-- a positive emotion can take us out of this downward spiral and create an upward spiral.

很经常的是-,积极情绪把我们带出下行螺旋,形成一个上行螺旋。

哈佛公开课 - 幸福课课程节选

And what we know is that very often we enter a downward spiral, a vicious cycle when we go into this narrow and constrict mode.

我们知道经常会进入下行螺旋，一个恶性循环，当我们进入狭窄收紧的模式。

哈佛公开课 - 幸福课课程节选