Generally, a computer system is comprised of different "sub" systems so a programmer needs to have some design or top-down thinking skills to see the program from the larger picture.

总的来说，一个计算机系统是由不同的“子系统”组成的，因此程序员需要掌握一些设计技巧或者自上而下的思维方法，这样才能从整体上把握全局。

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But at this moment we cannot calculate the work item status because it may contain sub-work items, so we need to declare two global variables to store these values.

但是此时，我们不能计算工作项的状态，因为它可能包含了子工作项，这样我们需要声明两个全局变量，以存储这些值。

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From this central idea all the sub-topics will flow. So outward from the center, you would write in the sub-agenda items.

所有次要主题都从这个主题分流出去，从中间向外写下那些次要的议程项目，无所谓你按什么顺序列出来。

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"So it is not the worst impacted country in sub-Saharan Africa by a long shot."

VOA: standard.2009.11.15

So, what we're saying is that we have n equals to 4, and m sub I being equal to negative 2.

我们说的是ｎ等于４,ｍｌ等于－２

麻省理工公开课 - 化学原理课程节选

And this spin magnetic quantum number we abbreviate as m sub s, so that's to differentiate from m sub l.

这个自旋磁量子数我们把它简写成ｍ下标ｓ,以和ｍ小标ｌ有所区分。

麻省理工公开课 - 化学原理课程节选

People will only drive so far for a sub sandwich, so in-filling existing markets was big, too.

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The sub has so many lights and cameras that it is like an underwater TV studio - with Mr Cameron able to direct and film the action from within.

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Without my glasses, I could read none of the signs or sub-titles, so Louis would read them out loud until I quietly asked him to stop.

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