range of headlamp

例句：

1. 1. The police officer had to adjust the range of his flashlight to illuminate the entire room.
   警察不得不调整手电筒的范围，以照亮整个房间。
2. 2.The scientist used a telescope to observe the stars in the night sky.
   科学家使用望远镜观察夜空中的星星。
3. 3. The driver adjusted the range of his headlights to avoid hitting any obstacles on the road.
   司机调整了头灯的范围，以避免在路上撞到任何障碍物。