The Equator is a great circle midway between the North and South Poles.
赤道圈是一个位于南北极当中的大圆周。
The equator is a great circle midway between the north and south poles .
赤道圈是一个位于南北极当中的大圆周。
You may wonder why the magnet's poles point north and south?
你可能会感到奇怪，为什么磁铁的两极会指向南北呢？（加了数词）
You may wonder why the magnet 's poles point north and south.
你会感到好奇，为什么磁铁的两极会指南北呢？
The earth's poles are called the North pole and the South pole.
地球的极点称作北极和南极。
The earth's poles are called the North pole and the South pole.
地球的极点称作北极和南极。
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