grid of screw dislocations

例句：

1. 1. The grid of the city is very well-maintained.
   这个城市的网格维护得很好。
2. 2. The engineer used a grid to hold the soil in place.
   工程师用网格来固定土壤。
3. 3. The grid was designed to support heavy loads.
   这个网格被设计用来承受重载。