Using the Ruby API, you don't need to open or close your file or manage the exceptions.

使用这个 Ruby API，无需打开或关闭文件，也无需管理异常。

youdao

With optional Limit Stops, the valve can be set to open or close to any partial position.

设备中装有可供选择的限位器，在任何位置处均可打开或关闭。

youdao

In this case, because you just wanted to open or close port 22960, a single command sufficed.

在这里，因为只希望打开或关闭端口22960，所以使用单一命令就够了。

youdao

you could characterize them in terms of how they're gated, -- and basically how they open or close -- that's one way to talk about different types.

你可以通过闸门的类型来描述它们，这基本上也就是看它们是如何打开或关闭的-,这是一种讨论不同类型的方法。

麻省理工公开课 - 化学原理课程节选

There are interior walls made of stainless-steel vertical panels that slide to open or close off rooms or create smaller openings.

WSJ: Sailing the Wide Miami Sky

Polish organizers later stated that they were unable to take a unilateral decision to open or close a roof since they needed clearance from FIFA to do so.

CNN: Downpour drenches Poland's Euro pride

You can have up to eight apps going at once, and the feature lets users quickly switch back and forth between messaging platforms without having to open or close apps or revisit the home screen.

CNN: 5 things that could make BlackBerry 10 a hit