non linear

柯林斯词典

also non-linear

1. ADJ If you describe something as nonlinear, you mean that it does not progress or develop smoothly from one stage to the next in a logical way. Instead, it makes sudden changes, or seems to develop in different directions at the same time. 不符郃邏輯的; 非線性的
Environmental systems tend to be nonlinear, and therefore not easy to predict. 環境系統一般是非線性的，所以很難預測。