graph of exponential function

例句：

1. 1. The scientist drew a graph to show the relationship between temperature and rainfall.
   科学家绘制了一个图表来展示温度和降雨之间的关系。
2. 2. The engineer used a graph to illustrate the flow of water in a river.
   工程师使用了一个图表来说明河流中水流的情况。
3. 3. The physicist created a graph to demonstrate the force acting on an object.
   物理学家创建了一个图表来展示作用于物体的力。