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1·Data mining are used to analyze the foreign exchange rate time series and acquire the correct, implicated and hidden information, which has practical significance in the financial field.

利用数据挖掘技术分析外汇汇率时间序列，从时间序列中获得正确的、隐含的、潜在的信息对于金融领域研究具有重要的现实意义。

2·Through the analysis of copper time series' characteristics, we found that copper yield rate time series had peak fat-tail characteristic, volatility clustering characteristic and obvious ARCH effect.

通过对沪铜收益率时间序列特征的分析发现，沪铜收益率时间序列存在尖峰厚尾性和波动集群性，并具有明显的ARCH效应。

3·Evolution of mollusks proceeded at a uniform rate over time.

随着时间的推移，软体动物的进化速度是一致的。

4·Various interventions, such as infection-fighting drugs, can increase a population's average survival time, but only approaches that slow the body's rate of aging will increase the maximum lifespan.

各种干预措施，如抗感染药物，可以增加人口的平均存活时间，但只有那些减缓人体衰老速度的方法才能延长最长寿命。

5·We wanted to know if the length of time food is in contact with a contaminated surface affected the rate of transfer of bacteria to the food.

我们想知道食物与被污染的表面接触的时间长短是否会影响细菌转移到食物上的速度。

6·Insurance can be purchased at a lower rate during the young years, but by buying while young, the premiums are paid in for a longer period of time.

人们可以在年轻时以较低的频率购买保险，不过年轻时开始购保的话，缴纳保险费的时间跨度更长。

7·By following individuals over time, Salthouse said, we gain insight in cognition changes, and may possibly discover ways to slow the rate of decline.

索尔特豪斯说：“随着时间的推移，我们通过跟踪个体对认知变化有了更深刻的认识，并可能找到延缓认知速度下降的方法。”

8·The supply of oil can be shut off unexpectedly at any time, and in any case, the oil wells will all run dry in thrty years or so at the present rate of use.

石油供应可能会随时意外中断；不管怎样，以目前这种消费速度，只需30年左右，所有的油井都会枯竭。

9·This was one way of passing some of the time, at any rate.

无论如何，这是打发时间的一种方式。

10·These faculties have the highest abandon rate and the biggest average time for degree completion.

这些教员的放弃率最高，完成学业的平均时间最长。