root of red rooted salvia

例句：

1. 1. The tree has a deep root system that extends far into the ground.
   这棵树有一个深根系统，延伸到地面深处。
2. 2. The roots of the plant are what hold it up in the soil.
   植物的根是支撑它立在土壤中的东西。
3. 3. The roots of the forest are visible from the road.
   森林的根部从马路上可见。