1. 用英语写介绍企鹅的作文50单词【企鹅的单词怎么写】 Living mainly in the Earth's southern hemisphere, now known to the world a total of 18 kinds of penguins. Features that can not fly; legs was born in the lower part of the body, it was upright posture; toes webbed; plantigrade sex (other birds in order to toe the ground); forelimbs into flippers; feathers short, in order to reduce friction and turbulence; feathers between the retained a layer of air for insulation. Back in black, belly white. The main difference is that the various kinds of color head-and body size. 。
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