To fly, of course, is the fastest way, but you can't see anything during your stay in the air but the blue sky and white clouds.

飞行，当然，是最快的方式，但是在你停留在空中的时候，你看不到任何东西，除了蓝天和白云。

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This leads to designing on the fly, with the committee instructing the designer to "try a different blue" in the hopes of finding middle ground.

这就导致设计上的停滞不前，因为委员会指示设计师“尝试不同的蓝色”，希望能找到中间立场。

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Wild ducks jet up and down the blue waters in spring and autumn, and fly fishermen wade the riffles, casting leisurely.

在春天和秋天，野鸭在湛蓝的水中飞上飞下，飞钓者涉过急流，悠闲地抛出鱼钩。

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This, it seems, is the UK version of the US "blue-assed fly" which dates back to 1932.

BBC: Quiz of the week's news

Blue fly-half Parks knocked over two successive penalties to close the gap, with Casey Laulala beginning to cause problems for the Leinster defence.

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Also, the centre piece of the announcement was a CGI fly-through along Victoria embankment including blue, segregated cycle lanes.

BBC: Cycling Crossrail: First of many bumps in the road