Simple solar position algorithm is used to trace the sun ray roughly, then the sun ray tracing sensor is adopted to catch the sun ray accurately.

采用简单的太阳位置算法粗略跟踪太阳光线；再利用光线跟踪传感器精确跟踪。

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While Ben was working in the sun, Tom sat under a tree eating the apple and thinking how to catch more boys.

当本在太阳下工作时，汤姆坐在树下吃苹果，想着如何吸引更多的男孩。

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This meant that it did not look at all somber. Indeed, it was the first building to catch the rays of the sun and the last to lose them.

监狱建在中世纪古堡的楼顶，是城市的制高点，也就是说，那儿一点都不阴森闭塞，事实上，每天阳光最先造访的便是监狱，最后离开的还是监狱。

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Then, stroll to the waterside gazebo to catch the sun's last golden rays.

BBC: Daily deal: Two nights in the Outer Banks

The all-carbon formula doesn't need to be thickly spread to do its work, and it simply lets visible light through -- it could layer on top of a traditional solar cell to catch many more of the sun's rays.

ENGADGET: All-carbon solar cell draws power from near-infrared light, our energy future is literally that much brighter

Continue on to the Corniche to stroll with locals as the sun sets, and wander over to watch the last rays catch the imposing Sheikh Zayed bin Sultan Al Nahyan Mosque, probably Abu Dhabi's most important landmark, known as the "Grand Mosque" to locals, and whose lavish buildings materials hark from as far afield as Greece, Italy, Morocco and Germany.

BBC: Stopover in Abu Dhabi