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Its exact role in the carcinogenic process, however, is still unclear.

但它在致癌过程的确切作用还不十分清楚。

It remains unclear whether supporters can overcome opposition to the bill, a point underscored by Senator Tom Carper , a Delaware Democrat, We are divided on these issues, these are difficult issue s, there is a lot of disagreement.

特拉华州民主党议员指出，现在还不清楚支持者们能否说服反对者。我们在这些问题上有分歧。这些是很困难的问题。有很多不同意见。

It remains unclear whether supporters can overcome opposition to the bill, a point underscored by Senator Tom Carper, a Delaware Democrat.

仍不清楚对这个提案，支持者是否能战胜反对者，一个要点是Delaware民主党人参议员Tom Carper的底线

It remains unclear whether supporters can overcome opposition to the bill, a point underscored by senator Tom Carper a Delaware Democrat.

提案支持者是否能压倒反对者仍然不明朗，特拉华州共和党议员Tom Carper强调。

It remains unclear whether supporters can overcome of the op position to the bill, a point underscore d by Senator Tom Carper, a Delaware * Democratic.

目前仍无法不清楚是否支持着可以说服反对者通过议案，特立华州民主党参议员 Tom Carper 强调了一点。

But it remains unclear about the detail of the causal relation in between.

但其如何影响人类肿瘤的发展则不得而知。

In preface, author discusses the meaning of this study and the actual state of research about culture of Tibetan oath at home and abroad. The first chapter analyzes two basic sources of oath culture. In the second chapter, by analyzing literature and actual examples, author explores the problem which the definition of "oath" is unclear in Tibetan dictionary. Combining with the definition of oath, in the third chapter ,the author differs the concept among promise, treaty, bargain and caution money. The fourth chapter is mainly about the element of oath; In the fifth chapter , author divides and explores the different content and meaning of Tibetan oath.

前言"论述了这篇论文的研究意义和目前国内外对于藏族盟誓文化的研究现状；第一章"盟誓文化的产生"论述了盟誓习俗产生的两个基本根源：思想根源和社会根源；第二章"盟誓的定义"通过分析文献资料和实例，对一些藏文词典中存在的对于"盟誓"的定义不够明确的问题进行了商榷和探讨；第三章"盟誓和几个近义词的区别"结合盟誓的定义，对诺言、条约、契约、保证金几个概念的定义进行区分；第四章"盟誓的要素"结合《格萨尔王传》论述了盟誓需要具备的要素；第五章"誓言的内容特征"中结合《格萨尔王传》中的盟誓形式，划分和探讨藏族盟誓的不同内容和意义；第六章"遵守誓言的意义和不守誓言的罪孽"通过相关文献资料分别探讨了遵守誓言的积极影响和不守誓的消极影响；第七章"违誓忏悔"论述了在违背誓言后，反省改过的意义；最后，"后记对《格萨尔王传》中的盟誓文化进行了概括总结，指出这一文化突显了藏族人民崇尚真诚的品格和渴望和谐的心愿。

The reasons for this phenomenon are unclear but may be related to nocturnal increase in cerebrospinal fluid pressure.

这些现象原因不清楚，可能与夜间脑脊液压力增加有关。

Firstly, the establishment of model requires sophisticated neurointerventional techniques and costly interventional materials(sacculus, minikin circlip ring, endovascular electrocoagulation), it not only consumed time but also increased the resesrch expense ; Secondly, although the Massoud model is the first successful model that contain the nidus, but it is far from mimicking the high-flow fistulae frequently observed in a brain AVM; Thirdly, the rapid spontaneous thrombosis result in fistula occlusion in a short time;Fouthly, the model's natural course and the long–term patency of fistula are unclear;Currently the model is only used for the short-term research.

但Massoud模型目前存在以下主要缺点：第一，模型的建立需要复杂的神经介入技术和昂贵的介入材料(球囊、微弹簧圈、血管内电凝等)，操作费时，又大大增加了研究费用；第二，Massoud模型虽然首次具备了畸形血管团，但它远不是我们临床上常见的含有高流量动静脉瘘的脑AVM；第三，颈动静脉吻合口自发性血栓形成进而导致引流静脉闭塞的机率很高；第四，Massoud模型的长期自然过程和动静脉吻合口的长期通畅性尚不清楚，目前仅仅作为急性期模型。

However, it remains unclear how reliable cleistogamy is for gene flow mitigation: a Co-Extra research project on rapeseed investigating the matter has published preliminary results which cast doubt on the attainment of a high degree of reliability.

然而，目前还不清楚闭花受精对缓解基因流有多可靠。Co-Extra项目以油菜籽为材料研究了这个问题，已经发表了初步结果；这些结果使他们对能否高度可靠地缓解基因流产生了怀疑。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。