用英语写介绍企鹅的作文50单词五十个单词就够了谢谢

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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.