The hiccup is that very little energy is generated and the harvesting mechanisms are sometimes larger than the devices they power.

这项技术的缺点是，生成的能量很小，电能捕获和贮存设备有时甚至比所供能的设备还大。

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But the Afghans often have their own way of doing things. And that sometimes conflicts with U.S.-led efforts to forge a larger, more independent Afghan security force.

VOA: standard.2009.12.13

Pavlakos said sometimes the larger bars get discounted, versus the smaller denominated coins.

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The game played like this for much of the 1990s, with studios sometimes demanding larger cuts of opening weekend sales even as the films played in theaters for smaller amounts of time.

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" And "we sometimes forget the larger bonds we share, as one American family.

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