本文以金融市场微观结构理论为基础，通过将时间窗口缩小来研究中国股市的交易量、收益率和收益率波动的变化特征。

Based on the market microstructure theory, this paper studies on the character of trading volume return and return volatility in China stock market through narrowing the time window.

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拟议的预算包括超过10亿美元的削减，这将通过减员来缩小警察部门的规模，已经停止了一些救护车的班次，并暂停了塑料和玻璃回收。

The proposed budget includes more than $1 billion in cuts that will shrink the police department through attrition, have halted some ambulance shifts, and have suspended plastic and glass recycling.

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鸭子是在有大量水的地方觅食和繁殖的鸟类，但近几十年来，由于干旱，它们的栖息地一直在缩小。

Ducks are birds that feed and breed in areas where there is a lot of water, but their habitats have been shrinking in recent decades because of the droughts.

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Now. You might look at that and say, well that's just a lot like what we had over here Right? We had some additive constant plus a simpler version of the same problem reduced in size by 1.

现在你可能会看着这个说，这很像我们以前做过的,对不对？我们用一些附加的常量,加上问题的另外一个规模缩小了1的,简化版本来代替这个问题本身。

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the abuse is, you know, it's not quite right, it depends upon whether it's all ready, but you can see in either case, after 12 steps, 2 runs through this and down to a problem size b over 2.

在12步以后，两轮过后，这个问题的范围b被缩小了一倍，这为什么很不错呢？,这意味着再来12步。

麻省理工公开课 - 计算机科学及编程导论课程节选