This makes Iraq increasingly less of a mess domestically but more a factor for regional instability throughout the Middle East.
届时伊拉克国内将一片混乱，是造成整个中东地区不安定的主要因素。
2
This is also the factor leading to the social instability.
这也是导致社会不安定的一个因素。
3
Recent studies have suggested that vascular endothelial growth factor, matrix metalloproteinase-2 and-8 play important roles in the instability of atherosclerotic plaques.