As a result, the magnetic fields become trapped in "islands," seen here as red orbs.

结果，磁场被困在“孤岛”中，就是这里看到的红色球体。

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Rotating magnetic field is not caused by mechanical methods, but in AC pass in a few of the electromagnet, the nature of its magnetic cycle of change can be seen as rotating magnetic field.

转动磁场并不是用机械方法造成的，而是以交流电通于数对电磁铁中，使其磁极性质循环改变，可看作为转动磁场。

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Public telephone boxes and magnetic card phone boxes can be seen everywhere.

公用电话亭和磁卡电话亭到处可见。

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We've already seen bids to cloak magnetic fields, which could find use in security applications, and even cloaks for heat that might keep future computers' processors cool.

BBC: Invisibility cloaks: Will we ever really have them?