years

基本解释

She outlived her son by many years.
她比她兒子還多活了好幾年。
We spent over five years on this project.
這項工程我們花了五年多時間。
《新英漢大辤典》
We now have a big house of which we could not have dreamed years ago.
我們現有的一座大房子是我們多年前沒能想像得到的。

He was forty years old. Over the years,historians and medical experts have tried to explain the cause of Poe's death.
Are they beginning to have basic assumptions changed over the last 50 years? I guess, well, 60 years now?
他們承擔的基本責任是否正在改變？,經歷了過去的50年，哦不，60年直到現在？
普林斯頓公開課 - 人性課程節選
Milton, who had died in 1674, had established himself as a great English poet within twenty or so years of his death.
彌爾頓死於1674年，死前花了20多年,奠定了他偉大英國詩人的地位。
耶魯公開課 - 彌爾頓課程節選

And Buick dealers, who have subsisted on scraps for years, are well respected and savvy.
FORBES: Can This Brand Be Saved?

A year is a period of twelve months or 365 or 366 days, beginning on the first of January and ending on the thirty-first of December.
&rarrsee also leap year
A year is any period of twelve months. 1
Year is used to refer to the age of a person. For example, if someone or something is twenty years old or twenty years of age, they have lived or existed for twenty years.
A school year or academic year is the period of time in each twelve months when schools or colleges are open and students are studying there. The school year starts in August or September.
A financial or business year is an exact period of twelve months which businesses or institutions use as a basis for organizing their finances.
You can use years to emphasize that you are referring to a long time.
&rarrsee also calendar year , fiscal year
the period of time, the solar year, during which the earth makes one revolution around the sun, measured between two successive vernal equinoxes: equal to 365.24219 days (Also called astronomical year, tropical year)
the period of time, the sidereal year, during which the earth makes one revolution around the sun, measured between two successive conjunctions of a particular distant star: equal to 365.25636 days
If something happens year after year, it happens regularly every year.
If something changes year by year, it changes gradually each year.
If you say something happens all year round or all the year round, it happens continually throughout the year.

年代
Container is modern transportation way which appeared in fifty’s years, and it is inexorable trend of development and develops quickly.
集裝箱化是五十年代出現的現代化運輸方式，是現代化運輸業發展的必然趨勢，發展很快。