three-year-olds汉语意思

three-year-olds汉语意思 fifteen-year-olds是什么意思? seven-year-olds Twelve-Year-Olds翻译 year olds还是years old? sixteen year olds 还是sixteen year old? twelve-year-olds 可以表示年龄吗?是12岁的意思吗？ three-year-old triplet 的意思 fifteen-year-olds看做单数还是复数? 为什么six-year-olds 是正确的 什么情况下用five-year-olds? sixteen-year-olds能做主语吗? sixteen-year-olds 这种表达正确么? sixteen-year-olds单数还是负数 three-to-four-week汉语意思 改为被动语态 They have read the book three times.we should allow six-year-olds to choose their own clothes. the next year的汉语意思 five-six-year olds是什么意思与five six-year olds的区别是什么