| 词汇 | fifteen |
| 词根词缀 | 词源： O.E. fiftyne, from fif "five" + tyne "teen," from ten "ten." (cf. O.N. fimtan, Swed. femton, Du. vüftien, Ger. fünfzehn, Goth. fimftaihun). 词根记忆： num.十五pron./a.十五(个,只…)He is fifteen years old.他十五岁. |
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