飞鼠又名鼯鼠、小飞鼠，分布于东南亚、北美和欧亚大陆，其身体小、头短圆、眼大、耳短，肘部至膝盖间具皮膜，四肢张开时皮膜绷紧，借此跃起滑翔。
飞鼠(即鼯鼠)包括43个不同品种。
Flying squirrel Flying squirrels (Pteromyini) include 43 different species.
飞鼠可以通过活动腕关节及调整翼膜的松紧度来稍微改变滑翔方向。
The squirrel can steer somewhat by moving its wrists and adjusting the tautness of its patagium.
流行文化绰号：这些绰号可能真的出自流行文化，比如天行者、太空飞鼠、坏消息巴恩斯、X战警。
Pop-Culture Nicknames: These can be actually taken from popular culture, like Skywalker, Mighty Mouse, Bad News Barnes, X-Man.
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