Two parallel lines, side with the intersection, turning into a butterfly, Yuchi lightly out of love poems.
两条平行线，偏有了交点，化蝶，羽翅翩跹出爱情的诗篇。
One of the lonely people, two of the lonely people. We are missing the interface between the lines. The intersection will again?
一个人的孤单，两个人的寂寞。我们是相交的错过的线条。还会再次相交么？
This paper proposed a new method to find the intersection line and determine its visibility of two general position planes using overlapped projection lines.
提出用重影线法求解两一般位置平面相交求交线判别可见性的新方法。
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