在困难中

First, the results revealed that the left middle temporal gyrus (BA 21) showed increased neural activity for phonologically primed irregular pairs consistent with increased semantic involvement in making lexical decisions when the mapping between orthography and phonology is made difficult.

三个主要的实验的结果如下：第一，当英文字对包含不规则字时，由於字形与字音的转换困难导致字义的涉入，在左脑半球的颞叶中区(BA 21)产生大脑神经活动增加的现象。

The diagnosis is difficult among patients with chronic symptoms and is rarely made preoperatively among patients with acute obstruction.

任何类型的腹内疝均可出现急性或慢性间歇性肠梗阻的症状，而存在慢性症状的病人的诊断很困难，急性梗阻的病人中也很少能在术前做出诊断。

Clinical trials in humans would be very difficult, however, because trials require many participants and there is no easy way to score effectiveness of a presymptomatic drug, Dr.

临床试验中，在人类将是非常困难的，但是，由于审判需要许多与会者并没有简单的方法来评分效力的presymptomatic药物，博士bezprozvanny说。

Another difficulty encountered in large enterprises is the hoarding of promotable persons by their immediate superiors.

在大型企业中遇到另一个困难，就是直接领导常常抓住有资格晋升的人员不放。

Thus it is presented an effective RNA extraction method based on the nuclease adsorbent macaloid, poly vinyl pyrrolidone, and high concentration of KAc and ethylene glycol monobutyl ether, which has successfully extracted high-quality RNA from many materials difficult to RNA isolation, such as RNase-rich rabbit liver, plant and microbial tissues rich in polysaccharides, lipids and polyphenol compounds.

现利用硅藻土对RNase的吸附性，结合PVP、高盐及乙二醇丁醚沉淀等处理，建立了一种广泛适用的RNA提取方法。在富含多糖的玉米胚乳，富含RNase的动物肝脏，多酚多油脂的银杏、麻疯树以及木霉、酵母等10多种RNA提取困难的动、植物与微生物材料中都提取出完整性好，得率高的RNA。

The microwave assisted synthesis of aromatic esters has advantages such as less time, efficiency and safety while the traditional process has the disadvantages such as long rection time, low yield, serious pollution and difficult separation.

传统加热条件下合成芳香酯具有反应时间长、产率低、污染大及后处理困难等缺点。微波辅助合成芳香酯具有反应快速、高效及安全等优点。该文综述了微波辅助合成芳香酯的研究进展，并展望了微波技术在芳香酯合成中的发展前景。

But 5-helix was apt to form inclusion body when expressed directly in prokaryotic cell and was difficult to renature, which causes inconvenience to future study.

但5-helix基因在原核细胞中直接表达时易形成包涵体，复性困难，给研究带来不便。

It can cause sequelae such as ectopic gestation, sterility, chronic pelic pain, salpingian dropsy, tubooarian cyst and chronic dyspareunia,which affect the female health greatly and increase the domestic and socioeconomic burden.

摘要研究背景：盆腔炎是育龄妇女常见病，多发病，一般认为3%的妇女在他们一生中患过，导致异位妊娠、不孕，慢性盆腔疼痛、输卵管积水、输卵管卵巢囊肿以及慢性性交困难等后遗症，严重影响妇女健康，且增加家庭及社会经济负担。

On the ecosystem health, definitions from utilization and ecosystem views are introduced, the contents and difficulties in assessing it are discussed. On the biodiversity enhancement, the relationship between forest structural complexity and forest biodiversity are discussed, the significance of old growth structure are highlighted, and measures of changing forest structure to promote forest biodiversity are put forward. On the landscape planning in forest management, some patterns, theoretical foundations and models are introduced, especially three conceptual models, i.e., key habitat\|corridors model, nature landscape model, and supportive features model. On the alternative silvicultural systems, reasons for developing alternative silvicultural system by mimic of nature disturbance are discussed, and some advanced techniques and their ecological basis are noted. Finally, on the ecosystem service, its contents and importance of assessment are illustrated.

关于森林生态系统健康，讨论了不同角度对生态系统健康的定义和不同层次上的生态系统健康的内容及评价生态系统健康的困难所在；②关于森林生物多样性，探讨了森林结构复杂性与生物多样性的关系，老龄林结构对森林生态系统的意义和作用，以及如何通过经营调整结构促进生物多样性；③关于森林经营的景观规划，描述了进行景观规划的途径、理论和模型，并对三种概念模型进行了介绍；④关于森林经营的替代技术体系，介绍了模拟自然干扰设计替代技术体系的原理，分析了替代经营技术体系产生的原因和有关最新技术研究进展；⑤关于森林生态系统服务，讨论了生态系统服务的基本内容和评价在森林生态系统管理中的重要意义。

In the process of OCR image scanning, images are always placed slantwise to some extent.

在OCR图像扫描输入的过程中，扫描图像经常会出现某种程度的倾斜，这种倾斜会给下一个字符的切割造成困难，影响字符识别的精度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。