Definition
A narrow beam or ray of light.
一道光线，一束光芒。
In the early morning, a shaft of light pierced through the curtains, illuminating the room.
清晨，一道光线穿透窗帘，照亮了房间。
At the end of the dark tunnel, a shaft of light appeared.
在黑暗隧道的尽头，出现了一道光芒。
As the clouds parted, a shaft of sunlight hit the mountain peak.
当云层分开时，一道阳光照在山顶上。