两个一组

Lily: The Barbican is a huge building with a concert hall, two theatres, three cinemas, two art galleries, a conservatory and a public library.

这个艺术中心是一组庞大的建筑群。其中包括一个音乐厅、两个剧院、三个电影院、两个艺术画廊、一所艺术学院以及一个公共图书馆。

The forward kinematics is analyzed by choosing one of the mechanisms which have one, two,three or zero angle constraint.Wherein,3-CCC is a new parallel mechanism which has three angle constraints and three distance constraints, Calay\'s formular and direction cosine matrix are used to describe the rotation matrix respectively.By setting Dixon\'s and Sylvester\'s resultant with the three angle constraint equations respectively and using parameters replacement to deal with the distance constraint equations,the 64 order input-output equation of the forward kinematics is obtained under both of the methods.Numerical example confirms these theretical results and the motion simulation is shown in VC++ by integrating OpenGL.

3对高小山提出的广义并联机构进行了研究，以其中具有角度约束的并联机构进行了分析，选取具有一个、两个、三个和零个角度约束类型中各一个机构进行了运动学正解求解，其中3-CCC是一种全部由圆柱副构成的具有三个线线角度和三个距离约束的新型并联机构，文中分别用Calay公式和方向余弦两种旋转矩阵建模方法对其位置正解进行了分析，通过对三个角度约束方程分别构造Dixon结式和Sylvester结式，以及对三个距离约束方程进行变量代换分别导出了位置正解输入输(来源：4040ABC论文网www.abclunwen.com)出方程，得出64组位置正解，并使用数值算例验证了其全部根。

In his article entitled "On the manufacture of diffraction gratings and theoretical," the paper wrote,"If every inch with the same number of two engraved lines in contact with photographic copies of the state, the two grating The engraved lines are almost parallel will result in a set of parallel stripes, the direction of the two grating carved exterior angle between the line bisection, and their distance decreases with increasing inclination."

他在一篇题为"关于衍射光栅的制造和理论"的论文中写到"如果把每英寸具有同样数目的刻线的两个照相复制品处于接触状态，使两个光栅中的刻线几乎平行则就会产生一组平行的条纹，其方向将两个光栅刻线之间的外角二等分，而其距离随着倾角的减小而增大"。

To make special sets, the same principle as for standard domino sets is used: each bone has two ends; on each end there are several dots; a set contains bones with all possible combinations of ends; there are no two equal bones (there is no distinction with respect to left or right ends, so, for example, bones 2-5 and 5-2 are considered equal).

作出特别规定，同样的原则作为标准是：每一个多米诺骨牌集骨有两个顶点；在有几个点(从0加速到给定的数字)；一组包含骨与所有可能的组合；没有两个相等的骨头无区别就向左或向右结束，所以，举个例子，骨头2 - 5和5 - 2被认为是平等的。

Patients were randomly assigned either dexamethasone (n=24) or placebo (n=19) and receied 9 months of treatment with standard first-line antituberculosis drugs.

患者被随机分成两组，一组给予地塞米松(n=24)，一组给予安慰剂(n=19)，同时接受9个月的一线标准抗结核药治疗。

So Elissa designed this study where we looked at two groups of mothers. One had normal, healthy children. The other group had a child with a chronic illness.

于是，艾丽莎就设计了这么个实验，试验中我们把那些做妈妈的女人分成两组，其中一组女人的孩子身体健康，各方面都正常，另一组女人的孩子患有慢性病。

To determine whether a similar outcome would prevail in patients with supraspinatus tendinopathy, the investigators randomly assigned 53 subjects (57 shoulders) to rehabilitation combined with use of a transdermal nitric oxide patch (1.25 mg glyceryl trinitrate/24 hours), or rehabilitation alone.

为了确认这项治疗法是否对岗上肌肌腱炎患者具有同样的效果，研究人员随机召募了53位患者(57个肩部病变)，分为两组；一组给予复健治疗，并配合经皮吸收的一氧化氮贴片(1.25 mg 硝基甘油/24小时)；另一组为单纯的肌腱复健治疗。

Measure the items on before and after the two courses of treatment respectively (one course for 15 days) as follows:①Syndromes Investigation: to adopt the scoring methods of symptoms and signs with the certain standard scoring table of symptoms and classifying table of signs for the patients, on the day before and after the two courses of treatment respectively,②Signs Investigation: the mucoma visibility, swelling or hyperemia conditions, or gloyp and polypoid change in the inferior and middle nasal conchas, nasal septum, etc with a nasal endoscope on the day before and after the two courses of treatment respectively,③Test of the interferon-γ、interleukine-4(IL-4) in serum of patients by the method of enzyme linked immunosorbent assay on the previous day before and after the two courses of treatment respectively.

治疗组在治疗前、两个疗程结束后分别进行以下项目的观察：①临床症状的评定：治疗前及两个疗程结束后当天对患者鼻痒、鼻塞、流涕、喷嚏症状的程度进行评分；②体征的评定：治疗前及两个疗程结束后当天采用鼻额镜肉眼观察患者下鼻甲鼻粘膜颜色、肿胀情况，及中鼻甲是否可见，有否息肉样变等；③治疗前及两个疗程结束后一天清晨空腹抽取患者肘静脉血4ml离心后，采用酶联免疫吸附试验检测患者血清IFN-γ、IL-4的含量。

Smilax, there are the phylogenetic relationships and distributive pattern to be found based on the combined ITS and maiK. tree: 1 a clade with the African species (S. kraussiana) and Australian species (S. australis), being a sister group; 2 a clade with the S. zeylanica of sect. Macranthae and S. bona-nox of sect. China, the former from Southeast Asia and latter native to US, showing they are a sister species which is disjunctive between Asia-North America, similar to the species pair of S. hispida and S. sieboldii; 3 S. perfoliata from Indonesia being sister to S. ocreata of China and S. megacarpa of Indonesia, which are very similar to each other in morphology; 4 the three species from China (S. lanceifolia, S. perfoliata and S. chapaensis) and S.ovalifolia from Indonesia showing a 87-92% bts monophyletic clade; 5 S.bracteata from China and two species of Indonesia (S. leucophylla and S. sp.) forming a clade in the ITS tree; 6 S.

通过比较研究圆锥花序组和穗菝葜组的地理分布，基于ITS及matK联合数据构建的系统树发现下列明显的具系统发育关系的类群及地理分布模式：1来自非洲的S.kraussiana和来自澳大利亚的S.australis是一对姐妹群，具有共同的祖先；2圆锥花序组的S.zeylanica和菝葜组的S.bona-nox形成一个紧密的分支，前者分布于东亚而后者只局限于美国，显示了一种类似于S.sieboldii和S.hispida那样的东亚—北美间断分布模式；3印度尼西亚的S.perfoliata是分布于中国的S.ocreata和来自印尼S.megacarpa的姐妹群，这三者在形态上也非常接近，表明具有共同祖先；4来自中国的三个种(S.lanceifolia，S.perfoliata and S.chapanensis)和来自印尼的S.ovalifolia形成了一个高支持率的单系分支(87-92％bts)；5基于ITS的系统树，来自中国的S.bracteata和来自印度尼西亚的两个种S.leucophylla and S.sp。

Paleozoic stratum can be separated east and west stratigraphical areas, according to lithological character and palaeontological information, contacted relationships and diversification of stratigraphical units in horizontal and vertical etc. The stratums in west area can be divided Devonian-Carboniferous Nanduan formation and Permian Laba formation, which is passive continental margin-bathyal depositional sequences comprised argillaceous and detrital rocks, small siliceous and carbonatite in upper. The stratums in east area can be divided lower-middle Devonian Wenquan formation and middle-upper Devonian Manxin formation, upper Devonian-lower Carboniferous Pingzhang formation, Carboniferous-Permian Yutangzhai formation, middle Permian Damingshan formation, upper Permian Shifodong formation respectively, moreover, middle-upper Permian Huoju formation is exposed in Menglian area.

根据地层的岩石组合、古生物、接触关系和地层单位的纵横向变化等特征，晚古生代的地层明显的可分为东、西两个地层小区：东部地层小区从下至上可划为泥盆—石炭系南段组、二叠系拉巴组，为一套泥质岩、碎屑岩，上部夹硅质岩、碳酸盐岩建造，属被动大陆边缘斜坡—半深海沉积；西部地层小区由下至上划分为下—中泥盆统温泉组、中—上泥盆统曼信组、上泥盆—下石炭统平掌组、石炭—二叠系鱼塘寨组、中二叠统大名山组、上二叠统石佛洞组，此外，在孟连一带尚出露中—上二叠统火居组。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。