有四种

It is because of these four qualities of leadership---vision, the ability to communicate that vision, confidence, and integrity---that Stephen F. Austin accomplished so much in the seedtime of Texas history.

正是因为这四种领袖的品质--有前景目标，让自己的目标为人知晓的能力，信心和诚实正直的品质--奥斯汀为得克萨斯的历史写下了创业的辉煌篇章。

It has been four hundred years since the note relation in semitone music been appeared, and it become a chords sequence favored by modern composers from subordination status in classical harmony.

内容提要：半音中音关系和弦连接从出现至今已有四百多年，从传统和声中的次要地位，到近现代成为一种作曲家喜爱的和弦序进，半音中音关系和弦连接是随着和声半音化的进程逐渐得到重视和运用的。

Biocell Laboratories, Inc has four decades of expertise in the fractionation and purification of human and animal serum proteins and is currently the only U.S. producer of bovine serum albumin and bovine gamma globulin utilizing the Cohn Cold Ethanol Precipitation Process.

Biocell实验室，公司在人类和动物血清蛋白的分馏和提纯上有四十年的经验，目前是美国利用科恩的冷乙醇沉淀法生产牛血清白蛋白和牛丙种球蛋白唯一生产商。

There are four kinds of logistics modes that have great significance to shortening the response time of the final users.

四种物流模式对于缩短供应链最终用户的响应周期有极大的意义和作用。

Sickness benefit is payable as full, three-quarters, half or one-quarter benefit, depending on the extent of the reduction in work capacity.

根据疾病对工作能力的影响，补助金有全额补助、3/4补助、半数补助、1/4补助四种形式。

This paper summarized four different kinds of soft rock tunnel distortion and its support methods,which provided guide for soft rock tunnel construction of coal mine.

归纳了四种不同类型的软岩巷道的变形破坏和相应的支护方式，对煤矿软岩巷道工程施工有一定的指导意

The somatotype of the students is rather stable, almost three fourth of the students remain the same type in three years.

国民教育阶段中男女青少年的体型颇为稳定，在纵贯研究的三阶段中，均约有四分之三在三年中保持了同－种体型。

Dynamic reliability under Littlewood-Paley wavelet is the biggest, dynamic reliability under modified meyerwavelet and harmonic wavelet are close. Analyzing the dynamic reliability of structure under odd exponent wavelet is very simple, it doesn't calculate Power Spectral Density function integral, it is only to calculate the square of displacement standard deviation and the square of velocity, then the dynamic reliability of structure can be concluded by max distribution. In addition the effects of upper limit is considered, when upper limit is smaller, the dynamic reliability of structure is less, that is, the damage possibility is bigger.

通过结构地震反应在小波基下的动力可靠性分析说明：无论是单自由度还是多自由度从理论上推导在这四种小波下的结构动力可靠性是可行的，而且考虑的结构地震反应都是非平稳的高斯过程，方法实现也比较容易；在Littlewood—Paley小波基下求得的结构的动力可靠度比较大，由改造的meyer小波和谐波小波求得的动力可靠度略有差异；单边指数小波下的结构动力可靠性分析非常简单，不用求功率谱函数来积分，只需求得结构地震反应的位移方差，速度方差，利用最大值分布公式就可得到结构的动力可靠时程；另外也考虑了超越界限对结构动力可靠度的影响，超越界限越小，结构的动力可靠度越小，即破坏概率越大。

Dynamic reliability under Littlewood-Paley wavelet is the biggest, dynamic reliability under modified meyerwavelet and harmonic wavelet are close. Analyzing the dynamic reliability of structure under odd exponent wavelet is very simple, it doesnt calculate Power Spectral Density function integral, it is only to calculate the square of displacement standard deviation and the square of velocity, then the dynamic reliability of structure can be concluded by max distribution. In addition the effects of upper limit is considered, when upper limit is smaller, the dynamic reliability of structure is less, that is, the damage possibility is bigger.

通过结构地震反应在小波基下的动力可靠性分析说明：无论是单自由度还是多自由度从理论上推导在这四种小波下的结构动力可靠性是可行的，而且考虑的结构地震反应都是非平稳的高斯过程，方法实现也比较容易；在Littlewood—Paley小波基下求得的结构的动力可靠度比较大，由改造的meyer小波和谐波小波求得的动力可靠度略有差异；单边指数小波下的结构动力可靠性分析非常简单，不用求功率谱函数来积分，只需求得结构地震反应的位移方差，速度方差，利用最大值分布公式就可得到结构的动力可靠时程；另外也考虑了超越界限对结构动力可靠度的影响，超越界限越小，结构的动力可靠度越小，即破坏概率越大。

This paper discusses four methods of the training of critical thinking skills : general method,submersion method,infusion method and integrated method.

依据批判性思维的教学、训练与大学生所学学科内容的关系，批判性思维技能训练可以有一般方法、沉浸方法、灌输方法和混合方法等四种。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。