局部不稳定的英文：
local instability

Water may serve as a type of instability.
水可以作为不稳定性的典型代表。

Combustion instability continues to plague development efforts.
燃烧不稳定仍然阻碍研制工作的发展。

aerodynamic (passive) instability is a disadvantage for manned vehicles
气动力(被动)不稳定对于载人飞行器是不利的。

The riot can be considered a symptom of political instability.
这次暴动可看作是政治上不稳定的征兆。

That would lead to ideological confusion and political instability.
这就会造成思想混乱，导致政治的不稳定。