frozen-in field lines

例句：

1. 1. The team's performance was so impressive that they were awarded the championship with a frozen-in field lines.
   团队的表现如此出色，以至于他们以冻结的田野线条获得了冠军。
2. 2.The researcher found that the frozen-in field lines had been used to mark the boundaries of the ancient city.
   研究者发现，冻结的田野线条被用来标记古代城市的边界。
3. 3. The farmers used the frozen-in field lines to determine the optimal planting time for their crops.
   农民们利用冻结的田野线条来确定他们的作物的最佳种植时间。