He directed a beam of light with his flashlight.

他用手电筒发出一束光。

A beam of light illuminated the dark hallway.

一束光照亮了黑暗的走廊。

The sun cast a beam of light through the window.

太阳通过窗户射进一束光。

A beam of light shone into the room.

一束光照进了房间。

The moon emitted a beam of light, lighting up the night sky.

月亮发出一束光，照亮了夜空。

A beam of light generated by a laser.

由激光器发出的一束光。

What if I shine a beam of light at you on the bank from my boat?

那如果我从船里投射一束光到岸上的你那儿？

This is what you see when you break up a beam of light with a prism.

这就是你用棱镜分解一束光时所看到的东西.

When a beam of light was moving in the same direction as the Earth, they expected the light to travel faster.

当一束光与地球往相同方向移动时，他们预测光速会变快。

For example, refraction, which is how a beam of light appears to bend as it passes from air into water.

例如，折射，当一束光从空气射入水中时，它看上去弯曲了。