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The distributions of mitochondrial and chloroplast haplotypes imply that local drastic"founder effect"and"backcross" have played important roles in the establishment of the hybrid populations.

从线粒体和叶绿体单倍型的地理分布可以看出杂种群体的建立曾经历强烈的奠基者效应和回交。

To better understand the roles of LsrA protein in nodulation, a series of analyses of nodules using scanning electron microscopy, genetic and biochemical approaches have been carried out. Our analyses suggest that the lsrA1 nodules contain bacteroids in the invasion and establishing zone only. The lsrA gene expression is active early in the invasion zone and activated later than bacA genes. The lost of LsrA protein dramatically reduced the expression of nifA and fixK, and completely blocked the expression of the nifH gene for nitrogenase. LsrA protein functions early in the bacteroid development and it is essential for the development nitrogen fixing bacteroids.

前期的工作中，苜蓿中华根瘤菌Rm1021中90个候选LysR基因已经被定向插入突变，并筛选在自生生长时期、共生生长时期的表型，以期寻找更多在自生状态或共生固氮中有功能的LysR转录因子。1 针对前期鉴定出的共生固氮必需的lsrA基因，我们应用了一系列扫描电子显微镜技术、生物化学、分子遗传学等方法，发现lsrA基因主要在根瘤侵染区开始表达，表达时序也在侵染阶段左右，但晚于bacA基因表达；LsrA蛋白缺失后根瘤固氮区中缺乏具有固氮能力的类菌体，nifA和fixK基因的转录水平降低，nifH基因的转录被完全阻断，因此LsrA蛋白为根瘤发育所必需，是新的根瘤发育信号传导途径成员。2 通过表型筛选我们鉴定了苜蓿中华根瘤菌的oxyR基因，并研究了它的调节特性。oxyR突变后，苜蓿中华根瘤菌对过氧化氢敏感性提高，适应性降低。

As speech act theory is a very important one in linguistics, this paper employs it to sort out the seven types of battled information flow between the participants of a speech, the related three speech strategies and the relationships between the roles of the participants and the bafflement of information flow.

言语行为理论是语言学重要的理论之一，本文利用言语行为理论梳理了法庭言语主要参与者的信息流动受阻的七大类型，分析了信息受阻所涉及的三大话语策略及其与参与者的角色关系。

As speech act theory is a very important one in linguistics, this paper employs it to sort out the seven types of battled information flow between the participantsof a speech, the related three speech strategies and the relationships between the roles of the participants and the bafflement of information flow.

言语行为理论是语言学重要的理论之一，本文利用言语行为理论梳理了法庭言语主要参与者的信息流动受阻的七大类型，分析了信息受阻所涉及的三大话语策略及其与参与者的角色关系。

Many Serbian Royal Families have had significant roles in European and Balkan history .

许多塞尔维亚王国的家庭有重大作用的欧洲和巴尔干历史。

On the role of Julio Baptista: I talk about the roles only when the players arrive.

对巴蒂斯塔的位置看法：我只会对米兰的球员发表这方面的看法。

Her dream of establishing a more permanent "foursquare movement" built around her understanding of the four roles of Jesus Christ - savior, baptizer, healer, and coming king - became a reality when she opened (1923) Angelus Temple, a 5,300 seat auditorium.

她未来的梦想是建立一个更加永久性的" foursquare运动"，围绕着她的了解，上述四个角色的耶稣基督-救世主， b aptizer，治愈者，以及未来国王-变成了现实，当她开（ 1 9 23）三钟经寺院，5 3 00多个座位的礼堂。

But Marshall extended the analysis of Black female characters begun by Hurston and Brooks by depicting her heroines development in terms of the relationship between her Barbadian American parents, and by exploring how male and female roles were defined by their immigrant culture, which in turn was influenced by the materialism of White America.

内容上看就是，此前文字的模式，她的改变，她的影响。这个思考过程，开始可以花费时间，但一旦想到，对所有写里程碑式意义的段落，其论证模式都是如此，我们就可以明白，结构模式，不依赖在这个结构下得到论述的种种题材，原来是可以帮助我们预测下文的。

But Marshall extended the analysis of Black femalecharacters begun by Hurston and Brooks by depicting her heroinesdevelopment in terms of the relationship between her Barbadian Americanparents, and by exploring how male and female roles were defined bytheir immigrant culture, which in turn was influenced by thematerialism of White America.

内容上看就是，此前文字的模式，她的改变，她的影响。这个思考过程，开始可以花费时间，但一旦想到，对所有写里程碑式意义的段落，其论证模式都是如此，我们就可以明白，结构模式，不依赖在这个结构下得到论述的种种题材，原来是可以帮助我们预测下文的。

Objective: To investigate the expression of bcl-2 and bax and their relationship, and their roles in the generation and development of laryngeal sqamous cell carcinoma.

目的：探讨基因bcl-2在喉鳞癌中的表达及其与bax的关系，以及在喉癌发生、发展中的作用。

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