They form in long lines across the dune field.

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If we put a dipole that has the freedom to move, we put that dipole in an electric field, it will align itself with the field lines.

若我们将偶极释放到自由空间中，比如说放到电场里，他们会自动排序按同一方向。

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We show the field lines and we show them settling down into molecules.

便展现出区域中的线条,以及物质如何,分解成分子。

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From the start, the lines on the field were covered by snow.

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Somewhere along the way, something must be happening that is alien to the neat picture of plasma and field lines moving together.

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The magnetic field lines are like the two lanes of traffic on a busy road: close together, but pointing in opposite directions.

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