Percy Liu @percyliu

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電學歐姆定律的圖解
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電學歐姆定律的圖解

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祝福親朋好友新年快樂!
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祝福親朋好友新年快樂!

年度尾牙中大獎。
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年度尾牙中大獎。

Merry xmas
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Merry xmas

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Stress test.
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Stress test.

頂樓的月亮
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頂樓的月亮