/bɪ'haɪnd; bɪ`haɪnd/
prep
1 (a) in or to a position at the back of (sb/sth) 在或向（某人[某事物]）的後面
*Who's the girl standing behind Richard? 站在理查德後面的那个姑娘是谁?
* Stay close behind me in the crowd. 在人群里你要紧紧地跟着我.
* The golf course is behind our house. 高尔夫球场在我们房屋的後面.
* a small street behind the station 车站後面的一条小街
* She glanced behind her. 她向身後看了一眼.
* work behind the counter, eg as a sales assistant in a shop 站柜台
* Don't forget to lock the door behind you, ie when you leave. 别忘了出门时把门锁上.
* (fig 比喻) The accident is behind you now (ie in the past), so forget about it. 事情已经过去了, 别再想它了.
(b) on the other side of (sb/sth) 在（某人[某事物]）的另一面
*hide behind a tree 躲在树的後面
* Behind the curtain she found a door. 在帘子的後面她发现了一个门.
* The sun disappeared behind the clouds. 太阳躲到云层里去了. Cf 参看 in front of (front). =>Usage at before2 用法见 before2.
2 making less progress than (sb/sth) 落後于（某人[某事物]）
*He's behind the rest of the class in reading. 他在阅读方面不如班上的其他同学.
* Britain is behind Japan in developing modern technology. 在发展现代技术方面英国落後于日本.
* be behind schedule, ie late 落後于预定计划.
3 supportive of (sb/sth); in favour of 支持（某人[某事物]）; 赞成
*My family is right behind me in my ambition to become a doctor. 我们家对我立志当医生完全赞同.
* He's trying to win the election with only 30% of voters behind him. 他正争取在选举中取胜, 虽然只有30%的选民支持他.
4 responsible for starting or developing (sth) 作为发生或发展（某事物）的起因
*the thought that was behind the suggestion 提出这个建议的想法
* the man behind the scheme to build a new hospital 兴建新医院这一方案的发起人.
5 (idm 习语) be behind sth be the reason for sth 是某事物的原因
*What's behind the smart suit and eager smile? 穿得这样漂亮、笑得这样甜, 究竟是什么原因?

/bɪ'haɪnd; bɪ`haɪnd/
adv part
1 in or to a position at the back of sb/sth 在或向（某人[某事物]）背後
*I cycled off down the road with the dog running behind. 我骑着自行车顺着道路行驶, 那只狗在後面跟着跑.
* The others are a long way behind. 其他的人远远地落在後面.
* What have we left behind (ie after going away)? 我们走後留下什么了?
* Don't look behind or you may fall. 别回头看, 不然要跌跤的.
* He was shot from behind as he ran away. 他跑开时, 有人从後面将他射中.
* We had fallen so far behind that it seemed pointless continuing. 我们已经落在後面很远, 继续下去似乎没有什么意义.
* I had to stay behind after school, ie remain in school after lessons were over. 放学以後我还得留在学校. Cf 参看 in front (front). =>Usage at before2 用法见before2.
2 ~ (in/with sth) failing to pay (money) or complete (work) by the date when it is due; in arrears (with sth) 拖欠; 积压
*I'm terribly behind (with the rent) this month. 我这个月（租金）拖欠得太久了.
* He's behind in handing in homework. 他没能按时交家庭作业.

/bɪ'haɪnd; bɪ`haɪnd/
n (infml euph 口, 婉) buttocks 屁股
*She fell and landed on her behind. 她摔了个仰八叉.
* He kicked the boy's behind. 他踢这个男孩儿的屁股.