focus the sun's rays on 使阳光聚焦于
If you focus the sun's rays on dry wood with a burning-glass, it will start burning.
如果你用取火镜使太阳光线聚焦在干木头上，木头就会燃烧起来。
If you take a magnifying glass outside into the sunshine you can focus the sun's rays on a tiny little point and actually start a fire.
如果你把一块放大镜带到太阳底下，可以把阳光聚集到很小的一点，点燃火焰。
Another technique USES moveable mirrors to focus the sun's rays on a collector tower, where a receiver sits. Molten salt flowing through the receiver is heated to run a generator.
另一种技术使用可移动的镜面将太阳光线聚焦到采集塔，采集塔上的接收器中含有流动的熔盐，熔盐加热后驱动发电机运转。
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