新环境(new environments) 复杂性状(Complex traits) 羽毛形成(feather formation), 体重(body weight),
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然而，羽毛的稀疏分布也使得皮肤表面形成相当大量的侧向空气流动，从而可以通过对流进一步散热。
The sparse distribution of the feathers, however, also allows considerable lateral air movement over the skin surface, thereby permitting further heat loss by convection.
在显微镜下可以看出，翠鸟羽毛那华丽的蓝色是通过折射光线而形成的。
Light scatters prismatically in microscopic feather structures to create the kingfisher's brilliant blue.
但是蓝色羽毛是靠折射光形成的，那是羽毛中一些类似棱镜的结构将蓝色光分离了出来。
But blue feathers result from refraction, a prism-style splitting of light inside a feather.
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