单词	beaver
释义	beaverbeaver /ˈbivɚ/ noun [countable] Etymology ETYMOLOGYbeaver Origin: Old English beofor a North American animal that has thick fur, a wide flat tail, and cuts down trees with its teeth → see also eager beaver at eager (3)
随便看	useless uselessly uselessness Usenet user user fee user-friendliness user-friendly user interface user name usher USMC USN USO U.S. of A. USP USS usual usually usurer usurious usurp usurpation usurper usury

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