16-year-olds 与the+形容词的区别

16-year-olds 与the+形容词的区别 year-olds与year-old的区别16-year-olds与16-year-old有什么区别吗? five-six-year olds是什么意思与five six-year olds的区别是什么 six-year-old与six-year-olds的区别 15-year-old与15-year-olds的区别 the six-year-olds是复数还是单数呀 Craig创办的 the twelve twelve-year-olds怎么翻译 这句话怎么理解?The number of 16 year olds entering the labour force peaked in the late 1970s fifteen-year-olds是什么意思? seven-year-olds Twelve-Year-Olds翻译 16-years-old和16-year-olds的区别 three-year-olds汉语意思 year olds还是years old? 16岁的男孩们 英语怎么说sixteen-year-olds boy和sixteen-year-old boys哪个对?还有sixteen-year-olds对么？ 16-year-old和16-year-olds和16 years old有什么区别? sixteen year olds 还是sixteen year old? sixteen-years-old与sixteen years old有什么区别sixteen year olds与sixteen-year-old都是什么时候用