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"Otary, n., etymology of" The Oxford English Dictionary. 2nd ed. 1989. OED Online. Oxford University Press. http://dictionary.oed.com/ (页面存档备份,存于互联网档案馆) Accessed November 2007
"Otary, n., etymology of" The Oxford English Dictionary. 2nd ed. 1989. OED Online. Oxford University Press. http://dictionary.oed.com/ (页面存档备份,存于互联网档案馆) Accessed November 2007