The black cloud threatened rain.

乌云预示就要下雨了。

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But if you look at other places, you see this black cloud?

不过如果你看向其他地方，你看到这个黑云了吧？

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This coincided with a black cloud which suddenly veiled the sun.

这时一团乌云忽然遮住了太阳。

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Another longer-term structural black cloud looming over the U.S. Treasury market remains the huge budget deficit.

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Every healthy day is a blessing that carries a black cloud on the horizon.

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For some investors, the stock market has a permanent black cloud over it.

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