fitted regression line

例句：

1. 1.The fitted regression line shows that the population growth rate is stable.
   拟合回归线显示人口增长率是稳定的。
2. 2. The fitted regression line provides a good approximation of the actual data points.
   拟合回归线提供了一个对实际数据点的良好近似。
3. 3. The fitted regression line helps us to understand the relationship between variables more intuitively.
   拟合回归线帮助我们更直观地理解变量之间的关系。