/ˈəʊpən ||; ˈopən/verb1 [I,T] to move sth or part of sth so that it is no longer closed; to move so as to be no longer closed 开；打开；张开: This window won't open -- it's stuck. 这扇窗打不开─给卡住了。The parachute failed to open and he was killed. 降落伞没张开，结果他摔死了。The book opened at the very page I needed. 那本书刚好翻开在我要看的那一页。Open the curtains, will you? 请你把窗帘打开，好吗？ [T] to open your eyes/hand/mouth 睁开眼睛；张开手；张开嘴巴 [T] to open a bag/letter/box 打开包╱信╱盒子 [OPP] close or shut 反义词为close或shut
2 [I,T] to make it possible for people to enter a place 开门办公或营业；开放；开设: Does that shop open on Sundays? 那家商店星期天开门吗？The museum opens at 10. 博物馆10点钟开门。The company is opening two new branches soon. 公司很快就要开设两个新的分部。Police finally opened the road six hours after the accident. 事故发生六个小时之后，警方终于将道路开放。 [OPP] close or shut 反义词为close或shut
3 [I,T] to start 开始 · The chairman opened the meeting by welcoming everybody. 主席为会议致开幕辞，欢迎大家莅会。I'd like to open a bank account. 我想开一个银行账户。 [OPP] close 反义词为close
4 [T] (computing计算机技术) to start a program or file so that you can use it on the screen 打开（程序或文件） [OPP] close 反义词为close
open fire (at/on sb/sth) to start shooting 开火:
He ordered his men to open fire. 他命令部下开火。 open into/onto sth to lead to another room, area or place 通向（另一房间、地区或地方）:
This door opens onto the garden. 这门通向花园。 open out to become wider 变得宽阔
open up 1 to talk about what you feel and think 无拘无束地谈；畅谈
2 to open a door 开门
open (sth) up 1 to become available or to make sth available （使）可供使用: When I left school all sorts of opportunities opened up for me. 我离开学校时，各种各样的机会都在等待着我。
2 to start business 开始营业: The restaurant opened up last year. 这家餐馆是去年开张的。