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一条在地球表面上连接磁偏为零的点的假想线。
On the Earth's surface where the magnetic declination is zero.
youdao
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分道线可以很容易的帮助你辨别自己向哪边偏。
The lane ropes will quickly make it apparent in which direction you naturally veer.
youdao
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分道线可以很容易的帮助你辨别自己向哪边偏。
The lane ropes will quickly make it apparent in which direction you naturally veer.
youdao