十二个的

Twenty minutes after the quarrel, while he was comforting his girlfriend, the man returned on the scene, bringing twenty friends with meat cleavers and bricks on them.

争吵后之后二十分钟，当他正在安慰自己的女友时，那个男的回来了，带着二十个朋友，手里都拿着菜刀和砖头。

He is considered as the greatest artist of the surrealist art movement and one of the greatest masters of art of the twentieth century, along with Picasso and Matisse.

达利是二十世纪最伟大的超现实主义画家，他与毕加索、马蒂斯一起被认为是二十世纪最有代表性的三个画家。

The research on anti-fatigue and anti-hypoxia functions of octacosanol extractants and the relativity of which with the purities of octacosanol extractants were carried out in this paper, which depended on the target related to creatural action and biochemistry.

并且本文将这三个纯度的二十八烷醇产品作为受试物，从动物行为学和生化指标的变化，来研究其抗疲劳、耐缺氧作用和检验其功效与二十八烷醇产品纯度是否具有相关性。

This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.

本文介绍了醛的不对称烯丙基化反应，以光学纯酒石酸为原料，研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性，全文共分三部分十个章节：第一部分对当前手性药物和手性技术进行了概述，并由此展开了本文的研究背景和任务；第二部分为有机合成部分，对醛的不对称烯丙基化反应进行了深入探讨，以苯甲醛为原料对反应条件进行优化，在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选，优化配体回收实验条件，最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性，结晶回收的手性配体光学纯度保持不变。

For the above purposes, using a tailored cyanometalate precursor,(1) Tp=hydrotris (pyrazolyl borate; Bu〓N〓=tetrabutylammonium cation , two trinulear complexes,〓(2),〓(3; cyclam: 1, 4, 8, 11-tetraazacyclotetradecane), two one-dimensional polymers,〓(4; dien: diethylenetriamine),〓(5), and a cluster 〓(6) have been synthesized and characterized structurally and magnetically.

基于上述研究热点，我们以修饰的氰基金属化合物(1)为构筑基元（Tp：三吡唑基氢硼烷，Bu〓N〓：四丁基铵离子），合成了两个杂三核化合物，〓(2)，〓（3；cyclam：1，4，8，11-四氮环十四烷），两个一维聚合物，〓（4；dien：二乙烯三胺），〓(5)，和一个十四核簇合物〓(6)。

With forty sockets of silver, two sockets were put under one board on the two sides of the corners, where the mortises of the sides end in the corners.

在二十块木板下边做了四十个银卯座，每块木板下两个银卯座，为安木板的两笋头。

And forty sockets of silver he made under the twenty boards two sockets under one board for his two tenons, and two sockets under another board for his two tenons.

36：23 帐幕的南面作板二十块。36：24 在这二十块板底下又作四十个带卯的银座，两卯接这块板上的两榫，两卯接那块板上的两榫。

And he made forty sockets of silver under the twenty boards, two sockets under one board for its two tenons and two sockets under the next board for its two tenons.

36：24 在这二十块板下，又作四十个银卯座；这块板下有两个卯座接板上的两榫，那块板下也有两个卯座接板上的两榫。

One can count, there 111 kings (not forgetting, to be sure, the Negro kings among them), 7000 geographers, 900,000 businessmen, 7,500,000 tipplers, 311,000,000 conceited men-- that is to say, about 2,000,000,000 grown-ups.

它上面有一百一十一个国王（当然，没有漏掉黑人国王），七千个地理学家，九十万个实业家，七百五十万个酒鬼，三亿一千一百万个爱虚荣的人，也就是说，大约有二十亿的大人。

As I have a lot of urgent matters to attend to at home, I'll fly back to Beijing this evening, which will be another ten-hour flight. So all together, I will spend twenty hours on the plane. At the outset of the meeting this afternoon, I said that I have come with sincerity, responsibility and confidence.

由于国内还有许多紧迫的事情要做，晚上就飞回北京，还需要十个小时，一共要在路上花二十个小时。

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。