An external circuit provides a path for the electrons to return to the p-type material, producing an electric current along the way that continues as long as light strikes the solar cell.

此时接上一条外线电路，电子便通过线路流动到p层。只要光束持续地撞击太阳能电池，就会有持续的电流。

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The second way to stretch a circuit is to make tiny islands of rigid silicon and connect them with wires that provide the flexibility.

第二种伸展电路的方法就是将极微小的硅用一根线连接起来，这种就能够保证一种柔性。

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The challenge, however, is extracting the spins to form a spin-polarized current and injecting them into a circuit without the polarization degrading along the way.

唯一的挑战是，如何提取自旋来形成一个自旋极化的电流，然后注入到电路中并保持极化在沿途不发生退化。

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Despite the court cases now clouding the outcome of the election and running all the way from circuit courts in Tallahassee, Fla.

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"We want to revolutionize biology in the same way that the integrated circuit revolutionized information science, " Quake says.

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After all, the latter can appear scantily clad on a slew of magazine covers and flirt her way through the promotional circuit.

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