In different parts of the small country vigilante groups have set up roadblocks and taken up makeshift arms, often on a sectarian basis.

在这个蕞尔小国的不同地方，义勇保安队已建立路障并手持临时武器，经常以派系为基础。

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This is more of an issue in the far east, where the leap second occurs in the middle of the day, and when one is inserted at the end of June and hence often on a working day.

这在远东地区更成问题，在那些地区，闰秒发生在一天的中间时段。

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Performance — the performance gains of stored procedures are mainly achieved through reducing the number of messages sent between the client (often on a remote computer) and the database server.

性能——存储过程的性能提高主要来自于减少客户机(常常在远程计算机上)和数据库服务器之间发送的消息数量。

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One such material is asphalt, a substance often placed on top of buildings and used to cover road surfaces.

VOA: special.2010.03.02

One way to think about it, if we want to use a classical analogy, which often helps to give us an idea of what's going on, is the spin of an electron, we can picture it rotating on its own axis.

如果我们用一个，经典的比喻来考虑它的话，这经常会帮助我们建立起一些概念，就是我们可以把电子的，自旋想象是它绕着轴自转。

麻省理工公开课 - 化学原理课程节选

Often what you'll see is not a table based on this definition, but something that's called the Pauling definition of electronegativity, but it's exactly the same idea and the same trend as this more numerical way to think about what the meaning of electronegativity is.

通常你看到的表格一般都不是基于这种定义的，而是基于,鲍林定义的电负性，但在意义上是相同的，并且满足同样的周期性规律,当和这种这种更数值化地理解电负性的定义,作对比时。

麻省理工公开课 - 化学原理课程节选

With Stageit artists set ticket prices (starting at 50 cents), often on a pay-what-you-can model.

FORBES: From Pop Star To Startup Boss: The Story of Stageit's Evan Lowenstein

He boasts of his record of getting things done in Washington, often on a bipartisan basis.

ECONOMIST: Closing arguments: The end is nigh | The

Staff analyse a customer's running gait, often on a treadmill and "diagnose" a pair of shoes that will avoid injury.

BBC: The peril of 'showrooming'