Heliconius butterflies display incredible color pattern variation across Central and South America, with closely related species usually sporting different colors.
从中美洲到南美洲的区域里，邮差蝴蝶展示着令人难以置信的颜色形式的变化，越是关系亲密的种群其颜色的差别越大。
The local wind field over the Chukchi sea is also an important factor affecting the sea ice pattern variation.
楚科奇海的局地风场也是海冰形态变化的重要因素之一。
The local wind field over the Chukchi sea is also an important factor affecting the sea ice pattern variation.
楚科奇海的局地风场也是海冰形态变化的重要因素之一。
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