单词	Klein bottle
释义	Klein bottle noun ˈklīn-  : a one-sided surface that is formed by passing the narrow end of a tapered tube through the side of the tube and flaring this end out to join the other end Word History Etymology Felix Klein †1925 German mathematician First Known Use 1941, in the meaning defined above
随便看	oses Osete osetra Osh OSHA oshacs oshas Oshawa Osheroff Oshkosh Osiandrian osiandrist oside osier osier willow osiered osiers osiery Osijek osires Osirian osiride osirification osirify Osiris

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