The sun peeped out from behind the clouds.

太阳从云层里露了一下脸。

《牛津词典》

The sun disappeared behind the clouds.

太阳消失在云层里。

《牛津词典》

Now the sun's behind the clouds

而今，太阳被乌云遮蔽

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So if you are struggling, please remember that the sun is still there, but it has just gone behind the clouds for a while.

CNN: There is no shame in not being Superman

Getting there involves a heady mix of chicken buses and trucks (all under the watchful companionship of Rivera), but as the ridges of the mountains start to emerge from behind the clouds of dust, and then emerge some more, it is clear this is a special place.

BBC: El Salvador rises from the ashes

And off in the violet distance behind them, prodding them along in their efforts, are the faint outlines of silvery cumulus clouds boiling up in the haze.

BBC: Before the storm in Cameroon