The sun shone brightly in a cloudless sky.

太阳在无云的天空中明亮地照耀着。

《牛津词典》

A cloudless, deep-blue sky looked down on them, for the wind had driven away every little cloud in the night.

万里无云，湛蓝的天空俯视着他们，风把夜晚的每一片云彩都吹走了。

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The cloudless sky is clearly a moneymaker for the town, which plans to set up even more observatories.

晴朗无云的天空显然为小镇创造了很多财富，小镇也打算设立更多的天文台。

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It was a perfect evening for football: cloudless skies and a light fall breeze.

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Video posted by the rebel forces shows a jet framed in a cloudless sky being shot at, catching fire and falling out of frame.

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But there might be an even more animalistic explanation why a cloudless sky buoys us up: "When it's good weather there's much more flesh on show, which cheers most people up, " says Dr Workman.

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