The International Organization for Migration says most of Iraq's more than 1.5 million internally displaced people are caught in a vicious cycle of despair.

VOA: standard.2009.10.04

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

That's when I have difficulty getting out of this downward, vicious cycle.

那时我将很难脱离这种下行，恶性的循环。

哈佛公开课 - 幸福课课程节选

Galmudug regional government Minister of Planning Omar Mohamud warns that not implementing a long-term solution to the water problem will fuel the vicious cycle of droughts, hunger,and violence and keep the Somali people in the iron grip of poverty.

VOA: standard.2009.10.06