eighty

The famous Route 66 is approximately eighty years old.

(Chinese) 著名的66号公路大约有八十年的历史了。

The new stadium can seat over eighty thousand spectators.

(Chinese) 新体育场可以容纳超过八万名观众。

My grandmother learned to use a smartphone in her eighties.

(Chinese) 我的祖母在八十多岁时学会了使用智能手机。

The life expectancy in that country has risen to over eighty.

(Chinese) 那个国家的平均预期寿命已提高到八十岁以上。