七老八十 seventy or eighty years old
Explanation
形容人年纪大，一般指七八十岁。
Describes a person as old, typically in their seventies or eighties.
Origin Story
在一个宁静的村庄里，住着一位七老八十的老人，名叫张老太。她一生勤劳朴实，育有四个儿女，都已成家立业。如今，老人家身体依然硬朗，每天早上都会早早起床，在院子里打太极拳，呼吸新鲜空气。尽管年纪大了，但她依然精神矍铄，思维敏捷。村里的小孩子们都很喜欢她，经常围着她听她讲过去的故事。张老太总是乐呵呵地回忆起她年轻时的种种经历，为孩子们讲述着那些充满智慧和趣味的故事。她的人生充满了经历，就像一本厚厚的历史书，留下了深深的印记。
In a quiet village lived an elderly woman named Zhang, who was in her seventies. She had been industrious and humble all her life, raising four children who had all started their own families. Now, the old woman was still in good health, waking up early every morning to practice Tai Chi in the courtyard and breathe in the fresh air. Although she was elderly, she was still mentally sharp and quick-witted. The children in the village all liked her and often surrounded her to listen to her stories from the past. Zhang always reminisced about her younger days cheerfully, telling the children stories filled with wisdom and fun. Her life was full of experiences, like a thick history book, leaving behind deep marks.
Usage
这个成语多用于描述年老的人，通常用来表达对老人的敬重或者同情。
This idiom is often used to describe elderly people, usually to express respect or sympathy.
Examples
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他都七老八十的人了，还是眼不花、耳不聋。
ta dou qi lao ba shi de ren le, hai shi yan bu hua, er bu long.
He is already seventy years old, but he still has sharp eyes and good ears.
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别看她七老八十了，干起活来可是一把好手。
bie kan ta qi lao ba shi le, gan qi huo lai ke shi yi ba hao shou
She is very old, but she still works very hard.