- half
 - [hɑ:f, hæf]
 - n. 一半;半场;半学年
adv. 一半地;部分地
adj. 一半的;不完全的;半途的 
同义词
           - n. one-half
 
反义词
           - a. whole
 
参考例子
           - 1.He cut her credit card in half.
 - 她把信用卡金额减少了一半。
 
- 2.I wish I could dance half as well as you.
 - 但愿我地舞蹈能跳得有你一半好就好了。
 
- 3."They land over there for half an hour, " he said.
 - “他们在那里登陆并停留了半个小时,”他说。
 
英文解释
           - n.
 - 1.one of two equal parts of a divisible whole
 - 2.in various games or performances: either of two periods of play separated by an interval
 
- adj.
 - 1.consisting of one of two equivalent parts in value or quantity
 - 2.partial
 - 3.(of siblings) related through one parent only
 
- adv.
 - 1.partially or to the extent of a half
 
网络释义
               - half
 - 一半; 半场; 半一半; 半双工;
 
- half back
 - 前卫;
 
- Half Duplex
 - 半双工; 半双工的; 半双向的; 半双向;
 
- half sock
 - 半截式鞋垫; 半截式鞋?;
 
- half court
 - 发球区; 半场。; 半边场; 比赛场地。篮球赛将全部比赛时间划分为上、下各一个半场。;