beam fixed at one end

例句：

1. 1. Thebeam of the light fell on the table.
   光线的光束落在了桌子上。
2. 2. The beamof the sun is shining brightly.
   太阳的光束明亮地照耀着。
3. 3. The beamof the spotlight was shining directly at her.
   聚光灯的光束直接照在她的身上。