八旬老奶奶说英文怎么说

八旬老奶奶（eighty-year-old grandmother）是指年龄已经八十岁的老奶奶。

这个短语的来源是由两个词组合而成的。“八旬”是指年龄已经八十岁，而“老奶奶”是指年纪较大的女性，一般是指祖母。

一些英文例句及其中文翻译如下：

My eighty-year-old grandmother is still very active. 我八旬老奶奶仍然非常活跃。
She often goes for long walks with her friends, despite being an eighty-year-old grandmother. 尽管她是一位八旬老奶奶，她经常和朋友们散步。
My eighty-year-old grandmother is the matriarch of our family. 我八旬老奶奶是我们家族的族长。