格子线

例句：

1. 1. The floor is covered with a grid of tiles.
   地板覆盖着瓷砖的网格。
2. 2. The map shows the grid of roads and highways.
   地图显示了道路和高速公路的网格。
3. 3. The engineer used a grid to calculate the stress in the structure.
   工程师使用网格来计算结构中的应力。