beam bifurcation

例句：

1. 1. The beam of the light shone through the window.
   光线通过窗户照射进来。
2. 2. The beam of the spotlight was shining on the stage.
   聚光灯的光束照在舞台上。
3. 3. The beam of the sun illuminated the landscape.
   阳光的光束照亮了风景。