adj (1)开着的(not shut)：an～door/window开着的门/窗户;with both eyes～睁着双眼;keep～house好客;keep one's ears/one's eyes～留心听/看;密切注视;push the gate～把大门推开;He stood there with his mouth wide～.他大张着嘴站在那里。〖同〗unshut，unclosed;〖反〗closed;
 (2)敞开的，未围起(堵塞)的，开阔(空旷)的(not enclosed， fenced in or blocked)[通常作attrib]：～fires/country/fields/meadows 明火/旷野/田野/开阔的草地;an～stretch of road 一段通行无阻的路;～sinuses/bowels窦道畅通/大便通畅;crack～a nut 敲开坚果;break～a safe 砸开保险柜;〖同〗wide，exposed，clear;〖反〗closed;
 (3)营业，办公(ready for business)[通常作pred][无comp]：The shop is～on Sunday afternoons.这家商店周日下午营业。The bank/new school isn't～yet.那家银行/那所新学校还未开始营业/开学。He declared the Olympic Games～.他宣布奥林匹克运动会开幕。
 (4)伸(展)开的，开的(spread out;unfolded)：an～newspaper/drawer 摊开的报纸/拉开的抽屉; The dictionary lay～on the table. 那本词典在桌上摊开放着。The roses were all～.玫瑰花儿都开了。
 (5)未系住的，解(松)开的(not fastened;undone)：an～package/shirt开封的一包东西/开襟衬衫;His coat is～.他的大衣敞开着。
 (6)没覆盖(遮掩)的，裸露着的(uncovered;bare)[作attrib][无comp]：an～car/wound/drain/running ulcer 敞篷汽车/开放性创伤/明沟/未愈合的还在流脓的溃疡;～wiring裸露的电线;
 (7)公开的，公共的，开放的(available or accessible;not restricted;public)[A(to)]：an～competition/championship/scholarship公开的竞争/锦标赛/奖学金;This school will be～to people of all races in the neighbourhood.这所学校将对附近所有种族的人开放。There are numerous channels～to you for this.在这方面有许多途径供你选择利用。Accounts were～to inspection.账目可供审查。This museum is～to the public.这家博物馆向公众开放。
 (8)不保密的，众所周知的(not kept secret or hidden)：an～show of affection/dislike of someone/scandal 爱的公开表露/对某人公开的反感/公开的丑闻;～opposition to the government 对政府的公开反对;The affair is quite～.这件事已众所周知。Their relationship is an～one.他们的关系是公开的。
 (9)诚恳的，坦率的(honest;frank)：an～nature 坦率的性格;He is a frank and～young man.他是一个真诚坦率的青年人。He was very～about his feelings.此人喜怒尽形于色。He was very～with me.他对我坦诚相见。
 (10)未最后决定的，尚未解决的(not finally decided or closed;available or obtainable)：Let's leave the question/the matter～.这个问题/这件事先悬着吧。I'd decided to be cautious，leaving all options～.我决定采取谨慎态度，对所有选择暂不作决定。The doctor has two appointments～.那医生还可以看两名病人。
 (11)空缺的(not filled)[作pred][无comp]：Which job/position is still～? 哪个工作职位还空缺?
 be an open secret 已是公开的秘密：What he's told you is an～secret.他告诉你的事情已是公开的秘密。
 be/lay oneself (wide) open to sth 使自己易受批评等：The phrase laid itself～to a charge of extreme unorthodoxy.这种话容易被指责为极端离经叛道。
 be open to offer(s) 欢迎开价： I haven't decided on a price but I'm～to offers.我未予定价，欢迎大家出价。
 have/keep an open mind(about/on sth)愿意听取、接受或考虑别人的意见、想法等：He has an～mind on most issues.他在多数问题上都愿意听取别人的意见。
 in the open air 在户外(露天)： It's good to have exercise in the～air.户外锻炼大有裨益。
 an open book 直爽而容易了解的人;毫无秘密可言的事：Your life in this town has been an～book.你在本镇的生活一直是公开的。
 an open sesame (to sth) 可得到某事物的捷径或窍门：Your note was an～sesame to the president's office.你的字条是进入总统办公室的法宝。
 open to sb 可供某人取舍： It was～to him to sign the agreement. 签不签此项协议由他决定。
 open to sth 乐于接受某事物：We are～to criticism.我们愿意接受批评。
 throw sth open (to sb) 使大家可接触或获得某事物：The universities were thrown～to all. 大学向所有人开放。
 with open arms 热烈(情)地：When he came to visit us at Christmas，we welcomed him with～arms.他圣诞节来访时，我们热情地欢迎了他。
 n 户外;野外;露天(area or space outside buildings)[sing]：We slept in the～under the stars.我们在星空下露宿.Agricultural workers pass the bigger part of their lives in the～.农业工人的一生大都在露天度过。
 bring sth/be/come (out) in(to)the open 公开(尤指秘密计划、想法等)：人人皆知： Her secret is now in the～.她的秘密已人人皆知。
 →′openly adv.公然地;公开地;坦率地;′openness n真诚;坦率;open-′air adj户外的;露天的;open-and-′shut adj容易解决的;′opencast(opencut)adj露天开采的;open-′ended adj无限制的;无预期目标的;open-′eyed adj睁大眼睛的;警觉(惕)的;机警的;open-′handed adj慷慨的;大方的;open-′hearted adj真诚的;善良的;open-′minded adj愿意接受新思想的;无偏见的;open-′mouthed adj目瞪口呆的;吃惊的;open-′plan adj(指建筑)开敞布置的;open-′work n(金属、饰边等)透雕细工;网状细工;
 【辨异】open与frank的区别见FRANK。
 v(1)(打，张)开(become open)[I，I+adv]：The door/window～ed.门/窗户开着。The door～s outwards/inwards.这扇门朝外/里开。
 (2)打(松、敞)开(cause(sth)to be or become open;unfasten)[T+n，T+n+prep]：～a door/a box/a parcel/a letter 打开门/箱子/包裹/信;Five minutes later she～ed her eyes.五分钟后她睁开了眼睛。O～your coat.你解开大衣吧。The door was suddenly～ed from within.那扇门突然从里面打开了。Don't～the door to strangers;it's not safe.不要给生人开门，那不安全。
 (3)穿过(某物)开辟通道，在(某物)上开孔(cut or make a passage through or opening in(sth))[T+n，T+n+prep]：～a mine/well/tunnel 开矿/打井/凿隧道;～a road through a forest开辟一条穿过树林的路;
 (4)(使某物)展(铺、张)开((cause sth to)spread out;unfold)[I，I+prep，T+n，T+n+prep(out)]：The roses are～ing.玖瑰花正在盛开。Bright vistas～ed before her.光明的前景展现在她的面前。～a book/newspaper/map on the table 在桌上打开书/摊开报纸/摊开地图;He～ed his palms in disbelief.他不相信地摊开双手。
 (5)开始(begin(sth))[T+n]：～an account开立账户;～a meeting/a debate/negotiations/hearings of a bill开会/开展争论/开始谈判/开始一项议案的听证会;They～ed an attack on local government policies.他们对地方政府的各项政策予以抨击。
 (6)(使)开张(开始营业)，(使)开放((cause sth to)be ready for business;make or become available for use)[I，T+n]：The shop～ed last week/at nine o'clock every morning.那家商店是上周开业的/每天上午9点开始营业。The exhibition～s tomorrow.展览会明天开幕。～a new shop/an office/a hospital开新店/开设办事处/开医院;Japan～ed her ports to western trade.日本向西方贸易开放了港口。The city park～ed its pool today.市公园今天开放了游泳池。
 (7)宣布(大楼等)竣工(开幕)(ceremonially declare (a building，etc) to be open)[T+n]：～parliament/the Olympic Games 宣布议会开会/奥林匹克运动会开幕;
 open one's/sb's eyes(to sth)使自己(某人)了解到意想不到的事物(长见识)：His eyes were～ed to the world of nature when he visited his grandfather's farm. 他参观了爷爷的农场，认识了自然世界。
 open fire (at/on sb/sth)开火：The warships～ed fire on the forts.战舰向要塞开火。
 open the floodgates of (sth) 打开闸门(释放出感情、破坏、反叛等的能量)： He～ed the floodgate of wrath when he heard that.他听到那件事后大发雷霆。
 open one's heart/mind to sb开诚相见，倾心吐胆：John felt much better after he～ed his heart to Betty.约翰向贝蒂倾吐了心声之后感觉好多了。
 open into/onto(v prep)通向某处(vt)： An arch～s into the dining room.有一拱门通往餐室。
 open out(v adv)1)打(张)开，展现，显示(vi)： We sped through the starry night with the prairie～ing out on either side.我们在星光下整夜飞速行进，我们的两边是开阔的大草原。2)(个性)形成(发展)(vi)： Business has been～ing out recently.近来业务不断开展。
 open up (v adv)1)畅谈(vi)(infml)：It was only after he had a few drinks that he could～up.酒过三巡他的话才多起来。2)使打(张)开(vt & vi)： O～up the boot of the car，and let me look inside.把汽车的行李箱打开，让我看看里面。3)(使)供开发(生产)(vt & vi)：The company has decided to～up this area for housing.那家公司已决定开发这个地区建房。4)(使)开业(张)(vt & vi)： The department store is～ing up a new branch in town.那家百货公司准备在城里开设一家新的分店。
 open with(v prep)以……开始(vt)： The first artist～ed the concert with a song.音乐会由第一位艺术家演唱一首歌开始。
 →′opener n 开启的人或(尤指)工具;′opening n