What advantage melanism brings in these circumstances is obscure.
在这些环境中表皮黑化到底有什么优势似乎模糊不清。
Insect melanism is one of the common polymorphism in nature, and has become classical study system for species evolution and adaptability.
昆虫黑化是自然界中普遍存在的一种多型现象，也成为揭示物种在自然界中进化与适应的经典范例。
Insect melanism is one of the common polymorphism in nature, and has become classical study system for species evolution and adaptability.
昆虫黑化是自然界中普遍存在的一种多型现象，也成为揭示物种在自然界中进化与适应的经典范例。
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