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At last, it makes research of four teachers evaluation which derives from other teachers and students, and verifies the facticity of results, then proves the feasibility of this method .

最后还调查了四位教师在其它教师和学生中的评价，验证结果的真实性，从而证明本方法的可行性。

Based on this assumption the author derives the mathematical model of which intercepting pitch-down target attacking our ship and friend ship, using this model,quickly and correctly computes the target curved motion parameters, pitch-down linearmotion parameters and projectile firing data.

在这个假设的基础上，推导出拦截俯冲目标攻击我舰和友舰的数学模型。较准确的快速计算出目标曲线运动参数。俯冲直线运动参数和弹丸发射诸元。

Remuneration which an individual who is or was immediately before visiting a Contracting State, a resident of the other Contracting State and who is present in the first-mentioned State at the invitation of a university, college, or scientific research institution for the purpose of teaching, giving lectures or conducting research at a university, college or scientific research institution recognized by the Government of the first-mentioned State derives for the purpose of such teaching, lectures or research shall not be taxed in the first-mentioned State, for a period of two years from the date of his first arrival in the first-mentioned State.

一、任何个人是、或者在紧接前往缔约国一方之前曾是缔约国另一方居民，为了在该缔约国一方政府承认的大学、学院和科研机构从事教学、讲学或研究的目的，接受大学、学院或科研机构的邀请停留在该缔约国一方。对其由于教学、讲学或研究取得的报酬，该缔约国一方应自其第一次到达之日起，两年内免予征税。

JOHN STEIN: You have to start off with a theoretical basis, with the reason that I've got from chart derives from the importance of the fissions in your nerve membranes and it makes very plausible, physiological sense.

约翰·斯坦：你必须从理论依据开始，因为我从由神经膜裂变的意义得出的图表显示，人的神经膜会带来似是而非的生理感觉。

First of all, this paper derives pressure expressions of stable state about vertical well inanisotropic media with various boundary. Based on this, Formulae of pressure distributionfor five-spot pattern and nine-spot pattern have been established, the characters of isobariccontours and streamline are analyzed, and this equips optimum of well pattern with theoreticfoundation.

首先利用坐标转换及镜像反演理论，推导了单一直井直线边界、平行直线边界的定常渗流的压力分布公式，在此基础上研究了五点法井网、九点法井网定常渗流问题，推导了压力分布方程，分析了等势线及流线的特点，为各向异性储层井网优化提供了理论基础。

Lin Yutang derives his knowledge from the development of humor's history, and then formes the systematic theory of humor.

林语堂从西方幽默发展的历史中汲取了丰富的养分，并通过自己的解读形成了较有系统的幽默理论。

The word Gypsy derives from Egyptian, similarly to the Spanish Gitano or the French Gitan .

吉普赛一词来自埃及，类似于西班牙吉卜赛人或法国吉坦人。

The word itself seems almost primeval; it derives from Pan, the goat-headed god of shepherds and flocks in Greek mythology, who was believed to startle people with outbursts of mysterious music in frightening places such as steep mountainsides or dark caves.

这个词本身就看起来很原始；它源自希腊神话中羊首人身的畜牧之神潘神，人们认为潘神会在陡峭的山崖或黑暗的洞穴等令人恐惧的地方突然奏响神秘的音乐来惊吓人们。

We are challenged to determine what is worse: the fact that such grotesques exist, or that Shrike—and formerly Miss Lonelyhearts, we are to assume—derives voyeuristic, unsympathetic pleasure from the readership's desperate pleas and are unwilling to offer any real help?

我们的挑战是要确定什么更糟糕的是：事实上，这种grotesques存在，或者说，伯劳鸟和原小姐Lonelyhearts ，我们承担，产生偷窥，同情心的读者高兴的绝望认罪，并不愿意提供任何真正的帮助？

To spruce up its lackluster performance Kraft must move into businesses with higher growth such as gum and sugar sweets and into booming emerging economies, where Cadbury derives over one-third of its sales.

为了改善不尽人意的表现，卡夫必须进攻成长率较高的事业部门，例如：口香糖以及糖果，并且打入成长中经济体，而吉百利在这些地区中获得超出三分之一的业绩。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。