经济的不稳定导致了许多企业的倒闭。

The economic ___instability led to the closure of many businesses.

长期的工作压力导致她情绪不稳定。

Long-term work stress caused her emotional ___instability.

地震后，这座塔显示出明显的不稳定迹象。

After the earthquake, the tower showed obvious signs of ___instability.

由于市场的不稳定性，投资者很难预测明年的收益。

Due to the ___instability of the market, investors find it hard to predict next year's returns.