two-dimensional signal

例句：

1. 1. The map is two-dimensional, so it's difficult to navigate without a compass.
   这张地图是二维的，没有指南针就很难导航。
2. 2.The data is two-dimensional, which makes it easy to analyze and visualize.
   数据是二维的，这使得分析和可视化变得容易。
3. 3. In the digital age, we need to be aware of the two-dimensional nature of information.
   在数字化时代，我们需要意识到信息的二维性质。