fiftyn.
英 'fɪftɪ | 美 'fɪfti
中文n. 五十；五十个；编号为50的东西\nadj. 五十的；五十个的；众多的
五十；五十个；编号为50的东西
adj. 五十的；五十个的；众多的
词根词源
fifty (n.)Old English fiftig "fifty; a set of fifty," from fif "five" (see five) + -tig "group of ten" (see -ty (1)). Compare Old Frisian fiftich, Old Norse fimm tigir, Dutch vijftig, Old High German fimfzug, German fünfzig, Gothic fimf tigjus. U.S. colloquial fifty-fifty "in an even division" is from 1908.
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