多分子的

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料，通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚，随后经低价钛还原偶联，没有生成正常的分子内羰基-羰基偶联产物，而是得到反常的羰基与α，β-不饱羰基的双键偶联产物，较高收率地得到了含多官能团的CycI[3，2，2]azine衍生物。

Our review focuses on the genetic, biochemical and ecological aspects of the anthocyanin pathway in Ipomoea, to provide some background information on the natural variation of floral color from multi-disciplinary angles.

本文着重介绍旋花科番薯属花青素代谢途径的分子遗传学、生物化学和生态学工作，试图从多学科的角度提供有关花色自然变异的知识背景，并指出未解决的生物学问题和预期今后可能出现的发展。

Our review focuses on the genetic, biochemical and ecological aspects of the anthocyanin pathway in Ipomoea, to provide some background information on the natural variation of floral color from multi-disciplinary angles. We also discussed unsolved issues and possible future developments.

本文着重介绍旋花科番薯属花青素代谢途径的分子遗传学、生物化学和生态学工作，试图从多学科的角度提供有关花色自然变异的知识背景，并指出未解决的生物学问题和预期今后可能出现的发展。

The secret order gave the military new authority to attack the Qaeda terrorist network anywhere in the world, and a more sweeping mandate to conduct operations in countries not at war with the United States

密令给出军事新的攻击基地组织恐怖分子的权力在世界任何地方联网，没有和美国交战从事在许多国家的业务的一个更多广泛的授权。

So, questions remain unsolved regarding the origin time and pattern of pteridophyte and the internal phylogeny of its members. It is suggested that future studies of the origin and evolution of pteridophytes place emphasis on synthetic analysis of morphology, stratigraphic sequences, and multi-gene systematics.

它们的起源时间和方式及其内部各类群的系统发生关系等诸多问题的解决，还有待于大量形态学和不同分子水平上的实验数据的进一步积累，并结合其直接的化石证据进行综合研究。

This HIFI spectrum, and the many more to come, will provide a virtual treasure trove of information regarding the overall chemical inventory and on how organics form in a region of active star formation.

伯金解释道：本次获得的HIFI光谱以及未来更多的光谱，将提供巨大的虚拟信息宝库，告诉我们在活跃的恒星诞生区域中，有机分子的整体目录以及是如何形成的。

There are a lot of abstract concepts such as the internal rotation and the normal vibration in the statistical thermodynamics.

统计热力学是物理化学理论框架中的一个重要部分，其中有许多抽象的概念和过程很难用传统的教学方法描述清楚，多原子分子的内旋转和简正振动就是突出的例子。

These microlites and richer amorphous region will benefit the polycondensation reaction of PET, the diffusion of volatile by-products, and the approach of the end-groups of PET molecular chains by forming more routeways, which may result in the higher rate of SSP.

作者认为这些更多数量的微晶体有利于固相缩聚过程中副产物小分子的扩散去除及PET大分子链端基的扩散接近，从而在宏观上表现为PET／MMT的固相缩聚速率大大提高。

Evidence is building that, in their pursuit of intelligence on Islamic extremists, British spies have been complicit in torture, even if they have avoided turning the thumbscrews themselves.

越来越多的证据表明，英国特务在审讯穆斯林极端分子的时候，会合谋采用严刑逼供的手段，即使他们不是亲自行动。

Philemon was accepted by him, though far more of a private note than any of the pastorals; and the presence of elements antagonistic to his own views need not have made him exclude them, since he could have easily excised these passages in this as in other cases Ency.

腓利门书接受了他，但更多的私人注意到比任何pastorals ；和敌对分子的存在，他自己的看法没有必要他排除了，因为他本来可以很容易地切除这些段落，这是在其他情况下

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。