eighties
When you talk about the eighties, you are referring to numbers between 80 and 89. For example, if you are in your eighties, you are aged between 80 and 89. If the temperature is in the eighties, the temperature is between 80 and 89 degrees.
He was in his late eighties and had become the country's most respected elder statesman.
那时他年近九十,并且已经成为该国最受尊敬的政界元老。
The eighties is the decade between 1980 and 1989.
He ran a property development business in the eighties.
八十年代,他经营了一家房地产开发公司。
Eighty is the number 80.
Eighty horses trotted up.
八十匹马小跑了起来。