a. 90至99岁的
n. 90至99岁的人
n. someone whose age is in the nineties
s. being from 90 to 99 years old
1. This is a good time to prep that draft on the nonagenarians you were talking about.
这可是个好时机来准备 关于你所说的老年人的草案。
以上参考资料就是本英汉词典详细汇总的单词nonagenarian的翻译英语含义，如有错漏请向我们提供反馈意见。