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This American Experience series - produced to coincide with the 100th anniversary of the founding of the city - documents the often surprising and endlessly entertaining history of America's most outrageous playground - from its beginnings as a remote frontier waystation to its Depression-era incarnation as the "Gateway to the Hoover Dam," from its mid-century florescence as the gangster metropolis known as "Sin City" to its recent renaissance as the fastest growing city in the United States, Las Vegas, chameleonlike, has adapted its image to reflect the changing attitudes of the nation.

从一个巨型游乐场到一个真正有血有肉、活色生香的城市，拉斯维加斯在10年间脱胎换骨。每年来拉斯维加斯旅游的3890万旅客中，来购物和享受美食的占了大多数，专程来赌博的只占少数。内华达州这个曾经被人讽刺为&罪恶之城&和&赌掉工资&的赌城，已经逐步成熟，成为一个真正的城市了。1990年到2000年这10年里，拉斯维加斯的人口增加了80%，目前已经达到约190万。而这座城市的吸引力也慢慢变得多元化。这个城市不再是&赌城&的代名词。

It should has hearkened concentrately as it's so flimsy as one casual word may collapse the entire edifice;it metamorphoses so easily as the unconfirmed rumor should fox all the pot of milk.the world is changing quickly as in the year of the moderner the better,friendship is holden tightly within us as the culture relic ,more aged and much cherishable.

友谊有的时候是那样容易变质，一个未经证实的传言，就会让整盆牛奶变酸。这个世界日新月异，在什么都是越现代越好的年代里，惟有友谊，人们保持着古老的准则。朋友就像文物，越老越珍贵。

The biomarkers such as the n-Alkanes, the isoprenoids, the terpane, and cholestane were detected through GC-MS analysis. Based on the study of the biomarkers, the biological evolution during Permian and Triassic can be divided as three stages, namely, the mixing source stage of low biota such as thallose and advanced plant in late Permian (below bed 63), the stage of low biota such as thallose in the boundary transitional layer (bed 63-69) and the mixing source stage of advanced plant and low biota such as thallose in early Triassic (above bed 69). What's more, the second stage near the boundary transitional layer can be subdivided into 4 stages. The stages of biota evolution is close related with sedimentary environment changing and the boundary transitional layer.

利用GC—MS分析技术，在陆相地层中检测出正构烷烃、类异戊二烯烷烃、萜烷和甾烷类生物标志化合物并根据生物标志化合物和特征值研究，将二叠系—三叠系生物演化划分为三个大的阶段，即晚二叠世的菌藻类低等生物与高等植物混源阶段（63层以下），界线异常层的菌藻类低等生物阶段（63-69层）和早三叠世高等植物与菌藻类低等生物混源阶段（69层以上），界线附近异常层的第二阶段又进一步细分为4个次一级阶段，生物演化阶段与沉积环境变化及界线异常层具有非常密切关系。

With the tenet of "credit, diligence, considerableness, maximization of clients' lawful rights and interest", Linnan provides both the domestic and foreign clients with all-round professional legal services, including serving as regular legal consultant, taking part in commercial negotiation, acting as agent of real estate, intellectual property rights, finance, securities, insurance, investment, merger and restructuring, bankruptcy and liquidation, marine commercial prosecution and non-litigious prosecution, etc., and acting as agent of various civil, economic, administrative actions and criminal defense, as well as other legal services.

岭南所以&信用、严谨、周全、实现客户合法权益最大化&为宗旨，为国内外客户提供全方位的专业法律服务，业务范围包括：担任常年法律顾问，参与商务谈判；代理房地产、知识产权、金融、证券、保险、投资、并购改制、破产清算、海事海商等诉讼、仲裁和非诉讼法律事务；代理各类民事、经济、行政诉讼和刑事辩护等法律事务。

BACKGROUND: Chitosan and its derivant are environmental-friend natural macromolecular materials, characterizing by great flocculation and adsorption capacities caused by electrophilic group including amino and hydroxyl groups, as well as its long-chain molecular structure. So chitosan is widely used as flocculants in domains of sewage disposal, food refining as well as Chinese medicine purification.

背景：壳聚糖及其衍生物是环境友好的天然高分子材料，其分子中丰富的带电基团如氨基、羟基以及长链分子结构赋予其优良的絮凝吸附能力，被作为絮凝剂广泛用于工业用水、食品精制以及中药液纯化等领域。

Results 12 cases as abdominal hernia (of which indirect hernia 9 cases, direct hernia 2 cases, femorocele 1 case), ultrasonography shows middle-high echo or linkage heterogeniety echo clumps; 8 cases as hydrocele, Ultrasonogram shows anechoic; 2 cases as cryptorchidism, ultrasonography shows normal testicular middle-echo; 4 cases as lymph node mass (of which lymphoma 2 cases, lymph node metastasis 1 case, lymph node inflammatory change 1 case), acoustic image shows low weak echo; 4 cases as substance mass (of which fibroma 1 case, spermatic cord tumor 1 case, Desmoid tumor 1 case, spermatic cord inflammation 1 case), Ultrasonography shows non-uniformity middle-highor low echo.

结果 12例为腹外疝（其中斜疝9例、直疝2例、股疝1例），声像图表现为中高回声或混杂性回声团块；8例为鞘膜积液，声像图表现为无回声；2例为隐睾，声像图表现为似正常睾丸样中等回声；4例为淋巴结包块（其中淋巴瘤2例、淋巴结转移1例、淋巴结炎性改变1例），声像图表现为低弱回声；4例为实质性包块（其中纤维瘤1例、精索肿瘤1例、韧带样瘤1例、精索炎症1例），声像图表现为非均匀性中高回声或低回声。

In this liquid membrane system,P291〔diphosphoric acid〕and TRPOare used as synergistic mobile carrier,N205 as surfactant,liquid paraffin as film-strengthening agent,sulphonated kerosene as solvent,and (NH4)2CO3 solution as inner phase agent.

用P291〔二磷酸〕、TRPO协同流动载体，N205为表面活性剂，液体石蜡作膜的增强剂，磺化煤油作溶剂，(NH4)2CO3作内相试剂的乳状液膜体系，迁移富集钍。

The electroless copper plating was studied in a bath consisting of glyoxylic acid as reducing agent,Na2EDTA as complexing agent,both 2,2′-dipyridyl and K4Fe6 as additives,focused on the influence of the additives on the deposition rate,as well as on the composition,structures and surface morphology of the deposits.

以乙醛酸作还原剂、Na2EDTA为络合剂、2，2′-联吡啶和亚铁氰化钾作为添加剂组成化学镀铜体系，研究了两种添加剂对化学镀铜速率、镀层表面形貌、组成和结构的影响。

As is eident from the 95% confidence interal around the point estimate, the data are consistent with as much as a 7% decrease in cardioascular risk and as much as a 32% increase in risk.

鉴于95%的置信区间，这一数据就意味着心血管疾病发病风险降低7%和增加32%。

The bearded creatures are quite as eager for praise, quite as finikin over their toilettes, quite as proud of their personal advantages,quite as conscious of their powers of fascination, as any coquettein the world.

满面胡子的男子汉往往像最爱卖俏的姑娘一样，喜欢听人家的奉承，打扮的时候吹毛求疵，长得漂亮些就自鸣得意，对于自己迷人的本事估计得清楚着呢

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。