So the hollows about this pond will, sometimes, in the winter, be filled with a greenish water somewhat like its own, but the next day will have frozen blue.

所以在湖边的许多低洼地，有时候，在冬天，充满了像它一样的绿色的水，可是到了第二天，我发现它们已冻成了蓝色的冰。

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Japanese broadcaster NHK showed the fish frozen in ice on a blue floor, so it looked like they were swimming below the ice.

日本电视台NHK了解到，这些鱼被冰冻在一块蓝色地板上，从表面看就像是在冰层下游动。

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I have noticed that a portion of Walden which in the state of water was green will often, when frozen, appear from the same point of view blue.

我注意到瓦尔登的一个部分，它的水是绿的，一俟冻结之后，从同一观察点望去，它成了蓝色。

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Contrary to the "gel" part of its name, aerogels are highly porous solids that look like frozen blue smoke.

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