eighty
/ˈeɪtɪ/cardinal number
(pl. -ies)
1- equivalent to the product of eight and ten; ten less than ninety;80八十; 八十个：
eighty miles north
向北80英里
a buffet for eighty
一家可容纳八十人的快餐部。
eighty of the nurses fled.
80名护士逃走了。
(Roman numeral: lxxx or LⅩⅩⅩ. 罗马数字： lxxx或LⅩⅩⅩ.)
1.1
eighties
the numbers from 80 to 89, especially the years of a century or of a person's life八十几; 八十年代; 八十几岁：his grandmother was in her eighties.
他奶奶80多岁。
1.2
- eighty years old八十岁：
he was over eighty at the time.
那时他已八十多岁。
1.3
- eighty miles an hour八十英里的时速：
roaring down the highway doing eighty.
以80英里的时速在高速公路上呼啸而过。
派生词
eightieth
ordinal numbereightyfold
adjective & adverb词源
Old English hunde（a）htatig, from hund (of uncertain origin) + e（a）hta 'eight' + -tig （see -TY2）; the first element was lost early in the Middle English period.