一枝特别保留的笔为“蓝色狗”预留着，但蓝色狗是很久以前已经绝种了的品种。

A special holding pen was reserved for "Blue Dogs," a breed that went extinct long ago.

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红色和蓝色当然是代表美国的其它颜色，但蓝色显示稳定与和平，而红色显示热情和精力。

The red and blue are of course the other USA colors, but the blue shows stability and peace, while the red shows passion and energy.

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她穿着他的一件衬衣，这件衬衣曾经是蓝色的，但已经褪得说不上是什么颜色了，还穿了他一条马裤。

She wore one of his shirts, a shirt that had once been blue but had faded until the color could not be named, and a pair of his breeches.

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So this is a little bit trickier to look at and see what it means, but essentially we have two hybrid orbitals, which are shown in blue here, and then we have one p orbital that's left alone that's going up and down on the page.

看这个图肯能会觉得比较诡异，但本质上，骂我们有两个杂化轨道，这里用蓝色表示，还有剩下一个p轨道,在图中上下方向上。

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