基本解释adj.十二岁的同根派生 twelve-year-old相关词英汉例句用作形容词 (adj.)His voice began to change when he was 12 years old.当他十二岁的时候他的声音深化了。She was only twelve at the time of liberation.解放那时节她才十二岁。twelve-year-old更多例句