A dark cloud of bees comes swarming out of the hive.

黑压压的一大群蜜蜂从那座蜂巢涌过来。

《柯林斯英汉双解大词典》

The only dark cloud on the horizon was that they might have to move house.

唯一的忧虑是他们可能要搬家。

《牛津词典》

A dark cloud passed over the sky.

一朵乌云从天上掠过。

《新英汉大辞典》

In the aftermath of all of the buzz based on the breaking of records, a dark cloud arose.

FORBES: Move up http://i.forbesimg.com t Move down

"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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