从我们所在的剧院位置，你可以看到她脸上的每一条皱纹。
From where we are in the orchestra, you can see every wrinkle on her face.
它们身后留下了一条长长的痕迹，你也许可以说这是它们从一个位置移动到另一个位置的轨迹。
They leave long trails behind them, tracks you might say as they move from one point to another.
这个系统里同样有你的位置，有一条期望中你应走的路。
The system also has a place for you, an expected path to follow.
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