verb
[] (about a shop/store, business, etc.) to start business for the day; to start business for the first time （商店、企业等）开始营业，开业 ◆ What time do the banks open? 银行甚麽时候开门？ ◆ The company opened its doors for business a month ago.这家公司一个月前开业。 ➡ close down, close sth down atclose
[] to start an activity or event 开始；着手 ◆ to open a bank account 开设银行账户
[] to start a computer program or file so that you can use it on the screen 打开，启动（计算机程序或文件）
[] if shares, currencies, etc. open at a particular price, they are worth that amount when people start trading them at the beginning of the day开盘；开盘价（为） ◆ The group's shares opened down 6%. 这个集团的股票开盘下跌 6%。
[] if a meeting opens or sbopens it, it starts宣布（会议）开幕 ◆ Who is going to open the conference? 谁来宣布会议开幕？
[] to make it possible for goods, people, etc. to come through 让（货物、人等）通行；开放 ◆ When did the country open its borders to Western business? 这个国家是甚麽时候向西方企业开放边界的？
to become or make sth possible, available or able to be reached （使某事物）成为可能，可得到，可达到 ◆ The new catalogue will open up the market for our products. 这本新的商品目录将会为我们的产品打开市场。 ◆ Exciting possibilities were opening up for her in the new job. 新工作给她带来了令人兴奋的发展前景。
to begin business for the day 开门；营业 ◆ I open up the store for the day at around 8.30. 我每天早晨 8:30 左右开店门营业。
to start a new business 开张；开业 ◆ New banks are opening up all over town. 城镇里到处都有新的银行开业。 OPP close down, close sth down