两年半的英文：
two years and a half
Two and a half years ago I gave up the evil weed.
两年半以前我改邪归正，不抽大麻了。
The first orbital test flight is scheduled for just two and a half years from now
预计第一次轨道试验飞行将在两年半后进行。
The Italian government agreed to subsidize the price Algeria was demanding—ending a two-and-a-half-year impasse…
意大利政府同意按阿尔及利亚要求对价格给予补贴，打破了待续两年半的僵局…
num. 二，两个
n. 两个人
adj. 两个的
Knit two, purl two.
两针朝下，两针朝上。
the better of the two
两者中的更好者
What does two and two make?
2加2等于几？
n. 年；学年，年度；年级学生；年龄；时期；很久；一年时间
Year succeeds to year.
年复一年。
This year is a banner year for crops.
今年是个丰年。
Year after year went past.
一年又一年过去了。
n. 一半；半场，半局
adj. 一半的，不完全的
adv. 一半地，部分地
That is a job and a half.
那是非常困难的工作。
half-believe ";"half believing, half doubting
将信将疑