There were patches of blue sky showing here and there through the clouds that had met and piled one above the other in the west facing her window.

正对着窗户的西面，层层叠叠的云朵之间，蔚蓝的天露出了脸，这儿一绺，那儿一片。

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But two U. s. researchers, a transportation expert and an atmospheric scientist, decided the time had come to apply blue-sky thinking to one of the world's greatest challenges.

但是来自美国的两位研究员，一位是交通专家，另一位是大气科学家，他们认为把蓝天思考纳入世界诸多重大挑战之一时候来到了。

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Either the sky is completely overcast, or the sky is blue with one single cloud and that cloud is raining.

天空要么全阴，要么就是蔚蓝的天空上孤零零飘着一朵云，而那朵云也是雨云。

youdao

And one day, outof the blue clear sky, I got a letter from Jenny wondering if I couldcome down to Savannah and see her, and that'swhat I'm doing here.

VOA: standard.other

The sky was just a little lighter blue than his suit, clear and even with only one cloud in it, a large, blinding white one with curls and a beard." Notice that image of the cloud, the blinding white cloud.

天空比他身上蓝色的西装颜色更亮，更清朗，甚至,空中只有一朵白云，是大而亮白的螺旋状和,胡须状，注意这多云的图像，一朵亮白的云。

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When all you have are ideas and no actual business, it's hard to analyze and quantify blue-sky--one reason why Internet companies, be they in North America, seem a little shy of pursuing the profit ideal.

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Sometimes a big blue hand would come down out of the sky and sweep away one or more levels of the square tower, or even the whole thing.

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But if you hit one of those beautiful winter days when the sea is calm and the sky is blue, continue along the coast path for about two miles until it curves into the hidden bay and tiny old harbour of Lamorna Cove.

BBC: Britain's winter wanderland