linear number

例句：

1. 1.The path is linear and easy to follow.
   这条路线是直线的，很容易跟随。
2. 2.The data is linear and can be easily plotted on a graph.
   数据是线性的，可以很容易地在图表上绘制。
3. 3.The growth of the population is linear, meaning it increases at a constant rate.
   人口的增长是线性的，意味着它以恒定的速度增加。