field ray

例句：

1. 1. The field ray of the sun illuminated the landscape.
   阳光的田野射线照亮了风景。
2. 2. The scientist observed the field ray and recorded its properties.
   科学家观察了田野射线并记录了其性质。
3. 3.The field ray was a crucial tool for mapping the terrain.
   田野射线是测绘地形的关键工具。