eighteen

名词 eighteen:

1. the cardinal number that is the sum of seventeen and one
   同义词：18, XVIII

形容词 eighteen:

1. being one more than seventeen
   同义词：18, xviii

1. The age of majority is eighteen.
   成年的法定年龄是18岁。
2. A pension is not usually one of the preoccupations of an eighteen year-old!
   一个十八岁的人通常是不会老惦著养老金的！
3. I was eighteen on my last birthday.
   我已经过了18周岁了。
4. The champion is leading by eighteen seconds.
   该冠军领先十八秒。
5. She dolled herself up as though she was a girl of eighteen.
   她打扮得花枝招展，好像是个十八岁的姑娘似的。
6. My daughter is eighteen years old and has grown into a beautiful lady.
   我的女儿十八岁了，已经长成为美丽的淑女。

eight.een

n.（名词）
The cardinal number equal to 7 + .
十八：等于7+的基数
The 8th in a set or sequence.
第十八：一组或一列顺序中的第十八个

来源：
Middle English eightetene
中古英语 eightetene
from Old English eahtatône * see oktô(u)
源自 古英语 eahtatône *参见 oktô(u)

【引伸】
eighteen.
adj.（形容词）
pron.（代词）