One way this might be done is to place a grid of wires behind them and induce a magnetic field where the wires cross. The spheres at the intersections would then rotate.

方法之一，有可能是在其背后建立一网格线和在线经过的地方引入磁场，在这地方的微珠就可以旋转了。

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They act, in other words, like tiny bar magnets with north and south poles, making them rotate in a magnetic field.

打个比方，这个“磁极矩”可以让电子像一个微型的条形磁铁那样在磁场中旋转。

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Diigo takes all the data it collects from users and lets them rotate it in interesting ways.

Diigo的所有数据都从用户收集，并让数据以很有趣的方式循环起来。

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To achieve that, grill the ears over medium-high heat and rotate them as they brown.

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They can have more quality players on their playing rosters, enabling them to rest and rotate.

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"The captain was doing the right thing because we have four spinners and the captain was trying to rotate them, " Murali said.

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