And yet the children themselves are only an intermittent presence in these pages, entering as a source of strife and disappearing once the conflict over them is resolved.

然而这些战中的孩子只是断断续续的出现在这本书中：当矛盾来临时他们出现了，当争端解决了他们又消失了。

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Yet since wind and solar power are intermittent and other technologies are still experimental, a constant source of low-carbon electricity will also be needed.

然而，由于风能和太阳能具有间歇性的特点，并且当前其他技术仍处于试验阶段，所以稳定持续的低碳电力来源急缺。

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Now that we have a very intermittent energy source that we want to insert into the grid, we need to rethink how we manage the integration of those resources.

现在，我们希望在电网中加入时断时续的发电设备，所以需要重新考虑管理这些资源的方法。

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Because geothermal produces consistent, base-load power--it doesn't depend on the wind blowing or the sun shining--utilities will pay up to three times more for geothermal electricity than for electricity from an intermittent source, like wind.

FORBES: Magazine Article

Wind is a good energy source but it's intermittent - we can fill that gap.

BBC: Biomass may hinder climate fight

Tidal turbines can be installed closer to shore than wave energy equipment, and thanks to the regularity of the tides, tidal power offers a more stable renewable energy source than, say, intermittent wind or solar.

FORBES: Wave Energy: The Latest Battleground in the Conservation vs. Innovation Debate