unstable
adj. 不稳定的；动荡的；易变的
例句
The political situation remains highly unstable.
政局仍然十分动荡。
《牛津词典》
The situation is unstable and potentially dangerous.
情况不稳定，可能有危险。
《柯林斯英汉双解大词典》
She was physically delicate and psychologically unstable.
她身体纤弱，而且心理也不稳定。
