| 词汇 | fifty |
| 词根词缀 | 词源： O.E. fiftig, from fif "five" + -tig "group of ten." (cf. O.N. fimm tigir, Du. vijftig, Ger. fünfzig). U.S. colloquial fifty-fifty "in an even division" is from 1913. 词根记忆： num.五十,五十个He earns fifty yuan a day.他每天赚五十元. |
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