This wood is, however, still much used for furniture, and for the strong beams of roofs.

然而, 这种木材依旧广泛应用于家具和房梁。

At 42.3 billion candlepower, it's the strongest beam of light in the world.

它有 423 亿烛光，是世界上最强的光束。

So after many times in between the two mirrors, and many reflections passing through the crystal, you end up with a very strong, narrow beam of light that is just one colour.

因此，在两面镜子之间经过多次反射，多次反射穿过晶体后， 你最终会得到一束非常强、很窄的光束，它只是一种颜色。