erratic

1. ADJ Something that is erratic does not follow a regular pattern, but happens at unexpected times or moves along in an irregular way. 不规则的; 不稳定的

Argentina's erratic inflation rate threatens to upset the plans. 阿根廷动荡不定的通货膨胀率有打乱这些计划的危险。

2. erraticallyADV 不规则地; 不稳定地

Police stopped him for driving erratically. 警察因其驾驶不循规则而把他拦下了。