twelve-year-old

基本解释

• adj.十二岁的

同根派生

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。