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Many studies suggest that the pessimist's feeling of helplessness undermines the body's natural defenses, the immune system. Research has found that the pessimist doesn't take good care of himself. Feeling passive and unable to dodge life's blows, he expects ill health and other misfortunes, no matter what he does. He munches on junk food, avvoids exercis, ignores the doctor, has another drink.

许多研究表明，悲观者的无助感会破坏其身体的自然防御体系，即免疫体系；他们无法照顾好自己；消极被动，禁不住生活的风雨，不论做什么，他都会担心身体不好或者会有其他不幸；他还会吞吃垃圾食品，拒绝锻炼，不听信于医生，一再放纵酗酒。

From a formal point of view these model worlds are clearly based on the dioramas of natural history museums, but they are not designed for systematic, generic categorization and clarity in terms of their content; rather, they stage a game where nature follows rules the human mind cannot fathom and ultimately overgrows and conquers human space.

以严谨的角度来看，这些模型世界很清晰的表明它是参照自然历史博物馆中那些微缩场景所建立起来的，但不是为系统学，种类分类，明晰他们内在联系所设计的，而是为了营造一个人类无法领悟的遵循自然规则的世界，在这个规则下自然界最终过渡繁衍并吞噬了人类的空间。

Sequence analysis and homology searches of public data bases, however, revealed no published sequences significantly similar to the sequence of the fragment, precluding a predicition of the potential function of the sequence.

但DNA序列分析和数据库检索表明，该片段与迄今发表的核酸序列均不存在显著的同源性，因此尚无法预测其潜在的功能性。

Field app lication shows that the sys2tem resolves the p roblem of testing impact deceleration dynamically, and realizes the automation of the testing p rocess, reduces er2rors and imp roves the reliability of the test results.

现场应用表明该系统解决了目前冲击减速度无法动态测试的问题，而且实现了测试过程的自动化，减小了误差，提高了测试结果的可靠性。

The polymerization of preparing PDA could be impacted by allyl chloride, allyl alcohol and allyl aldehyde. The content of allyl chloride, allyl alcohol and allyl aldehyde in the DMDAAC monomer solution varied from 0mg/kg to 1000mg/kg, their intrinsic viscosity of PDA descended from 10.3dL/g to 8.0dL/g, 6.8dL/g and 8.8dL/g respectively. The polymerization of preparing PDA could be carried out well in the case the content of NaCl, active carbon, yellow residua and low molecular polymer of DMDAAC were less than 10000mg/kg, 1000mg/kg, 1000mg/kg and 50000mg/kg respectively.

单一杂质含量变化对聚合产物PDA特征粘度影响的研究结果表明：在DMDAAC单体溶液聚合反应过程中，当Fe~(3+)、Fe~(2+)和Cu~(2+)含量分别达到7mg／kg、9mg／kg和5mg／kg时无法得到聚合产物PDA胶体；当烯丙基氯、烯丙醇、烯丙醛含量分别从0mg／kg增加到1000mg／kg时，聚合产物PDA的特征粘度从10.3dL／g分别下降到8.0dL／g，6.8dL／g和8.8dL／g；活性炭和黄色物质含量在1000mg／kg以下，低聚物含量在50000mg／kg以下以及氯化钠含量在10000mg／kg以下时产物PDA的特征粘度降低变化量不超过0.2dL／g。

Results of experiments under different conditions show that, compared with arc electrical signal and arc light signal, arc spectrum signal is of more advantageous property. It can not only detect short-circuit metal transfer, but also more effectively detect droplet in free transfer mode than electrical signal. It can not only detect the droplet transfer in the CO〓 welding, but also can detect spray transfer in Ar welding with advantage over arc light signal. Especially, its outstanding capability of detecting steam spray transfer where other approaches fail, shows that are spectrum information has the utmost signal quality in metal droplet transfer detecting.

多种工艺条件下的对比实验表明，与电弧电信号及光强信号相比，电弧光谱信号具有更为优越的信号品质，其不仅可以检测熔滴短路过渡而且优于电信号可以有效地检测自由过渡；不仅可以检测活性气体保护条件下的熔滴过渡，而且优于光强信号可以检测惰性气体保护条件下的喷射过渡，特别是其可以实现熔滴射流过渡的检测，解决了这一用其它信号无法克服的难题，体现出电弧光谱信息在熔滴过渡研究中所独具的优越性。

The results indicate that it is feasible to employ bucket wheel excavator for coal mining based on the cutting force analysis.

结果表明，采煤选用轮斗挖掘机从切割力角度分析在技术上是可行的；剥离选用轮斗挖掘机从切割力角度分析难度大于采煤，无法实现全年连续作业。

Through coupling of computational car course 5 rank the Li Dai of the model is counted, got Li Dai counts the verdict of full order, make clear 5 rank the system that the model is strong coupling of course of a car, alternate through coordinate the system cannot solve Ou only.

通过计算车轨耦合五阶模型的李代数，得到了李代数满秩的结论，表明五阶模型是一个车轨强耦合的系统，仅通过坐标变换系统无法解耦。

The numerical result shows that this method can correctly and quickly separate pure compress wave and pure shear wave from hybrid wave field with high precision, good boundary absorption, and the numerical process is stable, so it can be used to guide multi-wave multi-components seismic datum processing, and also point out that the method has difficulty to separate the coupled wave type such as surface wave.

数值模拟结果表明，该方法能够从混合波场中准确地分离出纯纵横波波场，且精度高，边界吸收效果好，计算速度快，计算过程稳定，可用于指导实际多波多分量地震资料处理，同时指出本文算法对相互耦合的波型无法实现准确分离。

The Shanghai Bund's night scene is beautiful is unable the shape We just went out the school gate, the day have come on under rain I simply had not thought that middle-aged woman is this family renowned hotel master Considered she has only studied a year English, her English said quite well zhejv 这句不行 The more and more many developing nation people receive AIDS the threat, therefore must take the measure to prevent its dissemination

上海外滩的夜景美得无法形容我们刚走出校门，天就下起鱼来了我根本没有想到那位中年妇女就是这家著名酒店的主人考虑到她只学了一年的英语，她的英语说得相当好了一项最近的调查表明，75%的市民对不断上升的油价表示担忧越来越多发展中国家的人受到爱滋病的威胁，因此必须采取措施防止它的传播

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。