Stars are forming within the dark cloud.

恒星正在该暗星云中形成。

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If this sort of clarity prevails, it would be a silver lining on the dark cloud that now looms over the poor.

若这一明晰思路得以畅行，它将是穿透笼罩在穷人头上那团阴云的一线阳光。

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Ultraviolet light heats the edges of the dark cloud, releasing gas into the relatively empty region of surrounding space.

紫外线能够加热黑云的边缘，将气体释放到周围的宇宙空间里。

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"If we don't remove the dams, the region will be covered by the dark cloud of uncertainty, " Masonis said.

CNN: Salmon Swimming

The dark cloud of another recession will loom (or rain) over the equity markets, our practices and the economy.

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For a decade, we have labored under the dark cloud of war.

WHITEHOUSE: President Obama Speaks at the Air Force Academy Commencement Ceremony | The White House