ray tracheide

例句：

1. 1. The sun's rays illuminate the entire city.
   太阳的光线照亮了整个城市。
2. 2. She gazed at the bright light from the window.
   她凝视着从窗户透进的明亮光线。
3. 3.The new technology will greatly enhance the efficiency of our work.
   这项新技术将极大地提高我们工作的效率。