二十个

The recipient is present in the other side for not more than 183 days consecutively or aggregately within any 12 months after the beginning or end of the taxable year concerned, and

收款人在有关纳税年度开始或终了的任何十二个月中在另一方停留连续或累计不超过一百八十三天

Main work follows:(1) In the first part of this paper, a historical development of the number theory before Gauss is reviewed.Based on the systematic analysis of Gauss"s work in science and mathematics, inquiry into the mathematical background that Disquisitiones Arithmeticae appeals and Gauss"s congruent theory;(2) The development process of Fermat"s little theorem and its important function in the compositeness test is elaborated through original literature.we think that the first three section of Disquisitiones Arithmeticae is a summary and development for ancestors" work about Fermat"s little theorem,show that Fermat"s little theorem played an important role in the elementary number theory;(3) With the two main sources of the quadratic reciprocity law, investigating Fermat,Euler,Lagrange,Legendre, until the related work of Gauss,the way to realize the laws huge push to the development of algebraic number theory in 19 centuries.

本文主要做了以下工作：(1)首先回顾了高斯之前的数论研究状况，在系统分析高斯的科学与数学成就的基础上，探讨了《算术研究》出现的数学背景和高斯的同余理论；(2)通过对原始文献的系统解读，深入分析了费马小定理发现发展的历程以及在素性检验中的重要作用，指出《算术研究》前三节是高斯在总结并发展了前人对该定理研究的基础上形成的，并揭示了费马小定理在初等数论定理证明中的核心地位；(3)以二次互反律的两个主要来源为线索，详细考察了费马，欧拉，拉格朗目，勒让德，直到高斯的相关工作，揭示了该定律对十九世纪数论发展的巨大推动作用。

Anastrophe--汉语顺成结构(6)In the past 12 months the word has watched with disbelief and dismay theacceleration of force and violence in the region.

过 去的十二个月里，全世界惊愕莫名地和难以置信地看到了这个地区正在加速使用武力和暴力。

Anastrophe--汉语顺成结构(6)In the past 12 months the word has watched with disbelief and dismay the acceleration of force and violence in the region.

过去的十二个月里，全世界惊愕莫名地和难以置信地看到了这个地区正在加速使用武力和暴力。

Anastrophe--汉语顺成结构）(6)In the past 12 months the word has watched with disbelief and dismay the acceleration of force and violence in the region.

过去的十二个月里，全世界惊愕莫名地和难以臵信地看到了这个地区正在加速使用武力和暴力。

The shares traded as high as $159.36 apiece in the last 12 months.

在过去的十二个月中，其股价最高甚至达到了159.36美元。

I can do things for 12 hours that would appall me if I had to keep them up for a lifetime.

因为，我虽然连续十二个钟做一件事，但若要我一辈子都这样做下去的话，就会吓坏我。

I can do something for twelve hoursthat would appall me if I had to keep it up for a lifetime.

对一件令我沮丧而又必须坚持一辈子的事，我只能坚持十二个小时。

I can do something fortwelve hours that would appall me if i had to keep it up for a lifetime.

对一件令我沮丧而又必须坚持一辈子的事，我只能坚持十二个小时。

I can do something for twelves hours that would appall me if I had to keep it up for a lifetime.

对一件令我沮丧而又必须坚持一辈子的事，我只能坚持十二个小时。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。