tens of years

基本解释

You and your brother followed him some tens of years, and when your master died, you forthwith turned away from him.
子之兄弟事之数十年，师死而遂倍之。
Wang Tian says that batteries will pollute the soil if they are buried underground, and for tens of years crops can't be grown in the soil.
王恬说如果电池被埋在地下就会污染土壤，这块土地上几十年都不能种庄稼。
Spring is the most precious time of our lives for the springs which we can count as ours are too few, for the average life of a man is only several tens of years.
春天在我们的生命中，是最珍贵的时光，因为一个人平均寿命只有几十年，我们能够见到的春天太少了！

They formed little by little tens of thousands of years ago when sea levels dropped.
And the company grew 80%per year for the first eight years compounded, and 60 % per year for the six years after that, which adds up to tens of billions real quick, as you know.
公司保持百分之八十的年增长,持续了八年，这之后的六年，每年增长百分之六十，正如你们所知，在很短的,一段时间内赚了数百亿。
斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选
These pieces can last for tens of thousands of years.

True, we have a lot more choices (often aided by technology) about precisely how we do these things in the modern world but we are still built by a hundred thousand years or so of our own species, tens of millions of years of mammalian evolution, into ending up with slightly different brains and slightly different interests to go along with our very different gonads.
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