但尽管竭尽全力，物理学者至今仍旧无法观察到任何磁单极子的蛛丝马迹[notes 9]最新进研究发现自旋冰(spin ice)是一种可以模拟磁单极子的材料，但不含有真实的磁单极子。
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artificaial spin ice 人工自旋冰
以上来源于: WordNet
Physicists have succeeded in creating analogs of magnetic monopoles, however, in exotic materials known as "spin ice."
物理学家们已经成功制造出磁单极子的对应物，然而，用的材料是叫做“自旋冰”的诡异物质。
Since that pulls mass closer to the planet's spin axis, it causes the planet to rotate faster - just as an ice skater spins faster when she pulls her arms towards her body.
由于质量朝地球旋转轴靠拢，这就导致地球旋转速度加快- - -就像一个速度滑冰选手，当她把胳膊向身体收拢时就会旋转得更快。
The scenario is similar to that of a figure skaterdrawing her arms inward during a spin to turn faster on the ice.
这一情景就像花样滑冰运动员在冰上旋转时，为了让自己旋转得更快，她会将手臂内曲。
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