- 打开；切开，割开：
The doctor opened up his stomach to get at the source of the trouble.
医生给他的胃开了刀，以便找出病根。
- 开办；开设：
He decided to open up a business in the city.
他决定在城里开一家商店。
- 开辟；开发；开拓：
A new territory has been opened up for trade.
开发了一个新的贸易区。
- 出现，展现；揭示：
What you said opened up his inner world.
你所说的揭示了他的内心世界。
- 直言，无拘束地说话：
After hours of grilling he opened up.
经过几个小时的盘问以后，他开始吐露了真情。
- 开火，射击：
Then, a gun opened up from his back.
这时，一支枪从他背后开火了。
- 提供：
Another chance is opened up for you.
你又有机会了。
- (比赛等)变得更加活跃起来：
In the second half the game opened up and several attractive shots began.
下半场比赛变得更加激烈了，出现了几次精彩的射门。
- 加速(开车等)：
The car really opened up when being on the expressway.
一上高速路，车子就真正加快速度了。
- 伸展；扩展：
The river opens up suddenly into a broad estuary.
河面突然变宽，形成了一个宽阔的河湾。
- (演员)前台亮相
- (演员)造型动作