It also has over-stretched infrastructure in a country that has experienced decades of conflict,instability and economic stagnation.

VOA: standard.2009.09.13

In other words, if the rise in instability is greater than the fall in stability, delta E this is a positive delta E.

换而言之，如果不稳定性的增加,大于稳定性的降低，将会有一个正的。

麻省理工公开课 - 固态化学导论课程节选

As I say, there's a certain instability which could never apply in the semiotics of the stoplight because there it's not so much a question of but rather the insistence that the color is just that color.

我承认，颜色的选择有时候是有规律的,但是在语义学上这解释不通,因为他们不考虑,但是语义学家认为颜色只单纯表示颜色。

耶鲁公开课 - 文学理论导论课程节选

"How it is impacting Pakistan and especially in the areas of drug trafficking, in the areas of corruption that exist in Afghanistan which have given power to a lot of warlords which make Afghanistan in a state of perpetual instability."

VOA: standard.2009.05.05