末期

One confounding factor is that the late Cretaceous was also a period of great volcanic activity.

令人生疑的一个因素是，白垩纪末期也是个火山剧烈活动的时期。

It is in Hong' an county where is a famous traditional revolution area that civil religion move ments, ever being seemed as feudal superstition , reappeared in the late 20 century, one of which is Mulan Confraternity.

红安是全国闻名的革命老区，然而，就是在这样一块英雄的土地上，20世纪末期又出现了某些曾一度被斥为"封建迷信"的民间信仰活动，木兰会就是其中之一。

In conclusion, Conjunctional system had established in the late Warring States Period, which go toward strict grammatical function, fixed form, systematization.

战国末期连词系统已经建立，连词的发展具有精密化、单一化、系统化的特点。

In the paper, the author argues that the development of financial innovation theory and practice since 1990s shows that the relation between innovation and regulation has changed from contradictor to mutualism.

90年代末期以来金融创新理论和实践的发展证明，金融风险也是一种可资利用的"资源"，同样存在着风险的"资源配置"问题。市场化的风险资源配置可以直接节约社会资金资源的占用。

In the first stage, the initial of morphologization of cormel happened, corresponding with the period from 4 leaf to full-blown, the growth and development of stolon mainly occured, while the number of cormel was a few and its weight slowly increased.

籽球生长发育表现出阶段性，第一个阶段为籽球形态建成初期，对应于地上部4叶龄期至盛花期，以匍匐茎生长发育为主，形成籽球数量少，籽球重量增长缓慢；第二个阶段为籽球快速膨大期，对应地上部盛花期至半枯期，籽球大量形成，籽球重量迅速增加，该阶段末期籽球逐渐成熟，生长发育进程减缓。

South where Britain had some popular support,but Cornwallis was defeated at Yorktown,Virginia,and forced to surrender (Oct.19/1781),which practically brought the war to an end.At sea,Britain had to fight to keep her naval supremacy,but after Yorktown the American ports were lost one by one.The war was

市中心有名的地下城是观光重点，本地下城原在19世纪末期，因铁路建筑而特意埋入地下，在70年代，因为隐密的关系，却成了罪犯的温床，直到一位安德鲁杨先生的努力，才使得地下城有了现在的活耀。

Digital earth, emerged at the end of last century, is a new strategic orientation for quantitatively studying the earth and a crosscutting multidisciplinary field of space science and technology, information science and technology, earth science etc.

数字地球是20世纪末期问世的定量化研究地球的一个新的战略方向，是集空间科技、信息科技、地球科学等于一体的交叉学科领域。

To investigate whether the expression of cdc2 and cyclin B1 in spermatogenic cells during spermatogenesis is actually a temperature dependent event, in situ hybridization, Western blotting and immunohistochemistry analysis were used to study the expression of cdc2 and cyclin B1 in normal and cryptorchid testis. Results showed that heat would differentially hurt male germ cells in different developmental stages during spermatogenesis, especially the pachytene primary spermatocytes. Most of spermatogonia in contralateral cryptorchid testis were not harmed fatally by heat as yet, indicating that spermatogonia could resist to beat to a certain extent. In this case spermatogonia could develop to pachytene/diplotene primary spermatocytes, but they could not acquire the ability to complete the transition from mitosis to meiosis, and then appeared to go through apoptosis. Therefore, we could not find the descendants of meiosis: secondary spermatocytes and round spermatids, elongated spermatids and spermatozoon. The abdominal temperature had no significant influence on the transcription of cdc2 and cyclin B1 in the spermatogonia and pachytene/diplotene primary spermatocytes. In normal rabbit testis, cyclin B1 increased in the pachytene/diplotene primary spermatocytes before meiosis and reached its peak in the spermatids.

为了解精子正常发生过程中cdc2和cyclin B1表达的低温依赖性，我们利用原位杂交和免疫组化等方法，研究了正常和隐睾精子发生过程中cdc2和cyclin B1的转录和翻译调控活动，结果表明：（1）热对各阶段的雄性生殖细胞都有损害，粗线期的初级精母细胞尤为敏感，实验性隐睾内的精原细胞尚未完全受到"致命"影响，说明精原细胞对热有一定的耐受性，但即使成为粗线期／双线期初级精母细胞，却未能获得由有丝分裂过渡到减数分裂的能力，呈现不同程度的凋亡，所以在整个切片中找不到源自减数分裂的产物----次级精母细胞、圆形精子细胞，更谈不上长形精子细胞和精子的形成；（2）腹腔高温未明显地影响隐睾精原细胞和粗线期/双线期初级精母细胞中cyclinB1和cdc2的转录，说明高温并不是通过影响cyclin B1和cdc2的转录活动而导致生精过程阻断的；（3）正常兔睾丸组织中，〓在精原细胞和粗线期／双线期精母细胞中均有表达：cyclin B1蛋白在减数分裂前期的粗线期／双线期初级精母细胞中的表达量增加，于变态末期的精子细胞中达高峰。

The absorption of root system was the main sources of nitrogen in the plant.The effects of matrix ventilation on the abaorption,transportion and metabolism of nitrogen in the root system of cucmber were discussed deeply.The results showed that contents of ammonium,nitrate,free amino acids and soluble protein in cucumber roots were higher in G1 treatment.Contents of ammonium,nitrate and free amino acids in cucumber roots were the trend of the dropping after the first rising in F1 treatment,but contents of soluble protein was lower11.03%than that of the control.

根系吸收是植物体内氮素的主要来源，本研究深入探讨了基质通气状况对黄瓜根系氮素吸收、运输和氮代谢的影响，结果表明G1通气处理根系的铵盐、硝酸盐、游离氨基酸和可溶性蛋白含量均较高；非通气处理(F1处理)根系内铵盐、硝酸盐和游离氨基酸含量呈先升高后降低的趋势，而可溶性蛋白含量始终较低，比对照降低11.03%。G1处理根系硝酸还原酶、亚硝酸还原酶、谷草转氨酶、谷丙转氨酶、谷氨酰胺合成酶活性均较高；而F1处理的酶活性在处理末期显著降低，其中谷氨酰胺合成酶活性比对照降低33.33%。

JOHN POLIDORI, who was born just as the 18th century drew to a close, was a doctor, gambler and literary dabbler.

约翰·波里道利，生于18世纪末期，是一名医生，一个赌徒，一位业余作家。

This paper analyzes the compound attractor structure of a new three-dimensional autonomous chaotic system.

分析了一种新的三维自治混沌系统吸引子的复合结构。

ON shut rivals out of their transmission systems and shy away from reinvesting their profits in network improvements.

ON将竞争者挡在了其输送体系之后，并不愿将其收益再投资于网络改建工作。