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.
子之兄弟事之數十年，師死而遂倍之。
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.
王恬說如果電池被埋在地下就會汙染土壤，這塊土地上幾十年都不能種莊稼。
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.
春天在我們的生命中，是最珍貴的時光，因爲一個人平均壽命衹有幾十年，我們能夠見到的春天太少了！

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長,持續了八年，這之後的六年，每年增長百分之六十，正如你們所知，在很短的,一段時間內賺了數百億。
斯坦福公開課 - 戴爾CEO-Michael.Dell談創業和發展課程節選
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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