然后列车开始运行了约20分钟，随后又再次停开。

The train then started running for about 20 minutes, then stopped again.

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从此以后，一个更大的电缆运行几次约一空心线圈。

From there, a larger cable is run a few times around a hollow coil.

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从此以后，一个更大的电缆运行几次约一空心线圈。

From there, a larger cable is run a few times around a hollow coil.

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