adjective · referring to a medical condition or disease that is long-lasting or recurring

慢性支气管炎在冬季容易复发。

adjective · slow and patient in temperament or the way one performs tasks

他的性格比较慢性，做什么事都很有耐心。

adjective · taking a significant amount of time to produce an effect or reaction

这是一种慢性毒药，中毒者不会立刻出现症状。