eighty
/ˈeɪtɪ; `etɪ/ pron, det 80; one more than seventy-nine 80, 八十（个）. =>App 4 见附录4. eighty, n
1 [C] the number 80 *80;八十.
2 the eighties [pl]
numbers, years or temperature from 80 to 89 从80到89的数目、 年数或温度.
3 (idm 习语) in one's eighties between the ages of 80 and 90 在80岁到90岁之间. For the uses of eighty and eightieth see the examples at fifty, five and fifth. 关於eighty和eightieth的用法见fifty、 five和fifth词条中的示例.