eighty
词根词缀：
后缀
-ty 表名词
1 用在形容词后，把形容词变成名词，“性质，情况，状态”
2 “…十”
eighty num. 八十
fifty num. 五十
seventy num. 七十
sixty num. 六十
数据来源：新东方英语词汇速记大全
相关例句：
He's well over eighty; he's still quite strong.
他八十多了，腰板儿还挺硬朗。
Electricity and water cost us eighty yuan per month.
我们每个月水电费大约要80元。
The Bulls won, eighty to seventy-eight.
公牛赢了，八十比七十八。
Two thousand seven hundred researchers from eighty countries and territories took part in the Census.
从八十多个国家和地区来的两千七百多名研究者参加了此次普查。
Perhaps the needle was eighty& ninety.
指针大概升到了八十&九十。
He ran a property development business in the eighties.
他在20世纪80年代经营着一家房地产开发公司。