12岁大的英语

名词性质的：twelveyearsold十二岁形容词：twelve-year-old十二岁的heistwelveyearsoldheisatwelve-year-oldboy你需要哪一个？

十二岁：twelve years old

、12岁的英语：12 years old，英 [jz ld] 美 [jrz old]。2、儿童通常在11或12岁时升读中学。Children usually transfer to secondary school at 11 or 12。3、那个12岁的男孩失踪三天了，警方对他的安全感到担忧。The police are concerned for the safety of the 12-year-old boy who has been missing for three days。