many years

基本解释

She outlived her son by many years.
她比她兒子還多活了好幾年。
He has born intense moral suffering for many years.
他多年來忍受了極大的精神上的煎熬。
《新英漢大辤典》
He pursued his hobby of collecting old almanacs for so many years.
多年來他一直保持著收集舊歷書的嗜好。
《新英漢大辤典》

It probably comes from an expression used for many years by people who fix parts of cars and trucks.
He wants to know if they are the same men who so callously broke their father's heart by selling Joseph, his father's favorite, so many years ago.
他想知道他們是否還是老樣子,就像他們曾經賣了約瑟夫，傷了他們父親的心，多年前，約瑟夫最受父親寵愛。
耶魯公開課 - 舊約導論課程節選
I think that many years ago, in the early 90s or 80s, or the 70s even, it was a very dangerous city.
我想很多年以前的八九十年代或者甚至七十年代，它是一個非常危險的城市。
在上西區 - SpeakingMax英語口語達人

But they will need more patience — these cases typically take many years to resolve.
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