18的英文为eighteen
用法例句：
该冠军领先十八秒。
The champion is leading by eighteen seconds.
年满十八岁者有选举权。
Eighteen-year-olds qualify to vote.
一个十八岁的人通常是不会老惦著养老金的！
A pension is not usually one of the preoccupations of an eighteen year-old!
我的女儿十八岁了，已经长成为美丽的淑女。
My daughter is eighteen years old and has grown into a beautiful lady.
