nonlinear connection

例句：

1. 1. The graph shows a nonlinear relationship between temperature and rainfall.
   图表显示了温度和降雨量之间的非线性关系。
2. 2.Nonlinear equations are difficult to solve analytically.
   非线性方程很难用解析方法求解。
3. 3.In physics, the behavior of objects is often described using nonlinear models.
   在物理学中，物体的行为通常使用非线性模型来描述。