阻碍

Third, most magnesium alcoholates are prepared by alcoholysis.The process is based on the exchange of alkoxide groups of a metal alcoholate in the presence of an alcohol other than the alcohol corresponding to the original alkoxide,i.e.on the alcoholysis of a metal alkoxide with a different alcohol. Primary alcoholates can be prepared by this process,such as magnesium di-n-propanolate,magnesium di-n-butanolate,magnesium di-isobutanolate.

该方法适用于较高沸点的伯醇的醇镁化合物，例如正丙醇镁、正丁醇镁、异丁醇镁等，但是用醇解法制备出的叔丁醇镁，其纯度只有80％，这是由于叔丁醇具有较大的空间位阻效应，阻碍了醇交换的进一步进行，并且叔丁醇沸点与甲醇相差不大，使得甲醇难以快速蒸出，只能得到一种混合醇盐产物。

Third, most magnesium alcoholates are prepared by alcoholysis.The process is based on the exchange of alkoxide groups of a metal alcoholate in the presence of an alcohol other than the alcohol corresponding to the original alkoxide,i.e.on the alcoho- lysis of a metal alkoxide with a different alcohol. Primary alcoholates can be prepare- d by this process,such as magnesium di-n-propanolate,magnesium di-n-butanolate,m- agnesium di-isobutanolate.

该方法适用于较高沸点的伯醇的醇镁化合物，例如正丙醇镁、正丁醇镁、异丁醇镁等，但是用醇解法制备出的叔丁醇镁，其纯度只有80％，这是由于叔丁醇具有较大的空间位阻效应，阻碍了醇交换的进一步进行，并且叔丁醇沸点与甲醇相差不大，使得甲醇难以快速蒸出，只能得到一种混合醇盐产物。

Aleutian disease of minkis worldwide known as one of the most serious disease to mink farming.

水貂阿留申病是阻碍养貂业发展的世界性攻关病害。

In Taiwan area often have typhoon attracting during summer times. Typhoon brings abundant rainfall and the rainfall concentrates to the river, naturally washes out the main channel and the river high alluvion. When flood retreat, the exposed high alluvion can be widely used. Agriculture, plant and wetland, these places can increase zoology. On the other hand ,they baffle current of water flow. So this research focuses on different arrangement of flexible vegetation.

中文摘要因为台湾地区因气候关系常有台风侵袭，台风来临时带来的充沛雨量集中到河川，自然冲刷出主河道和高滩地，当洪水退去时，裸露的高滩地即可以广泛地被利用，有许多的人为开垦、种植，但是这些植生有增加动植物栖地的益处，另一方面也会产生阻碍水流的害处，所以本篇对於不同布置方式的柔性植生做流场的研究。

It is also known that some of the ingredients found in the leaf such as aloin, are recognized as having laxative properties, and are known to be destructive to human skin in regards to the development of keratinocytes.

芦荟叶中所含的一种名叫"芦荟素"的成份具有轻泻剂的某些特性，能阻碍角化细胞的形成，因此对人体肌肤有腐蚀作用。

And, where it meets with an obstruction alongshore,a fabric, or like cotton sheeting. Attempt to row a

潮水使它随波逐流，在靠近岸边时，它遇到了阻碍，折了起来，变成皱状了，或者像一个棉织品，或者像一条棉床单一样打着卷。

Based on the regulation of The farmer cooperative law, the author believes that those property possessed by the cooperatives has the features of nihitility and alternativeness, so that it can not realize the legislative objective of clearing the limit of property responsibility assumed by the cooperatives and its members and maintaining the market transaction safety. Moreover, these two features can also be harmful to the reliance interest, the self-interests and trading opportunities to the farmer cooperatives and hindering its long-term development.

基于《农民专业合作社法》的规定，合作社支配的财产具有虚无性与变动性的特点，不能实现明确成员以及合作社承担财产责任界限、保障合作社交易对象信赖利益和维护市场交易安全的立法目标，进而会损害合作社交易相对人的信赖利益以及合作社自身利益和市场交易机会，并阻碍合作社的长期发展。

He let nothing, not friendship, not justice, not truth stand in the way of his amassment of wealth.

他不让任何事物--友谊、公正、真理阻碍自己聚敛财富

From anotherviewpoint, Mr Sarkozy was a meddling egomaniac whose amateurism andself-importance gravely impeded the EU's ability to intervene.

也有另外的看法，说萨科奇先生是个自大狂，他的业余性和自负严重阻碍了欧盟的斡旋能力。

Since reform and opening in China, with the rapid development of the rural economy, environmental pollution problems in rural areas have become increasingly serious. It has seriously affected the realization of new socialist countryside featured with "the production development, the life ampleness, the local custom civilization, the village neatness, and the management democracy" and hampered the coordinative development of economy, society and environment in rural areas even the entire country.

改革开放以来，随着中国农村经济的快速发展，农村环境问题也日益突出，严重影响了社会主义新农村建设的"生产发展、生活宽裕、乡风文明、村容整洁、管理民主"目标和要求的实现，阻碍了农村乃至全国经济、社会和环境的协调发展。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了