有生物的

A novel endocyclic enamine cyclopentenone annulation was discovered and rationalized as an unusual Nazarov-type electrocyclization, which would have broad applications in the synthesis of natural alkaloids and other heterocycles.

我们在合成路线一、路线二中用的6-6元环系到7-5元环系的还原重排反应，在温和的酸性还原条件下即能发生，这说明在三尖杉碱的生物合成中6-6元环到7-5元环的还原重排步骤是非常有可能发生的；因此，我们的合成路线二中可认为是生物合成过程。

The students read texts to obtain the microscope-related concepts which included the following: making water mount specimen to be observed by depending on the correct steps, the image of object shown on compound microscope was enlarged directly by the specimen; some differences of structure were found both plant cell and animal's cell, animal's cell does not have cell walls and chloroplasts, it unable to photosynthesis; small living beings of water, consumers, will eat little small living beings.

学生由阅读文章而获得的细胞相关概念主要有：能依正确的步骤，制作一个水埋法标本片进行观察，在复式显微镜下观察到的影像和实物是左右相反、上下颠倒的，植物细胞和动物细胞的形态及构造有些差异，动物细胞不具细胞壁、叶绿体，无法行光合作用，有些水中的微小生物会摄食更小的微小生物，是消费者。

Cloudina was known as the first animal acquired mineralized skeleton at the terminal Neoproterozoic,but it was not the only exception that could secret minerals. More evidence of diverse skeletal animals came from deposits before the Cambrian"big bang". A relatively diverse tubular microfossil assemblage is described from the Terminal Neoproterozoic Dengying Formation of South Shaanxi, China.

末元古纪以Cloudina为代表的管状动物化石是目前世界上公认最早的具矿化骨骼的生物类群，在世界许多地区都有发现，但它并不是当时唯一的矿化生物类型，更多的动物骨骼化化石证据在寒武纪大爆发之前的沉积物中时有发现。

The bio-degradation pathways of NP would be that the long branches in nonyl of NP are firstly degraded into short methyl branches, which come into being a series of short chain alkyl phenols with different branch structures. The middle products should be further metabolized into simpler compounds, such as benzene acetic.

污水生物处理过程中壬基酚可能的初级生物代谢途径是壬基上的长支链断裂为短的甲基链，生成一系列带有不同分支结构的短链烷基酚类代谢产物，进一步的代谢产物有苯乙酸。

Beijing compared with the current hot real estate is residential projects, which in the CBD planning to do a lot of residential projects, the current developer and will soon come into the main developers of residential projects have been doing from the function, if the CBD Central Business District there are some changes in function, it will affect the development of CBD.

太多北京住宅项目相比，目前的热点是房地产住宅项目，这些项目在CBD的规划做了大量的住宅项目，目前的开发和即将开发的主要住宅项目已经做了功能，如生物多样性公约中央商务区也有一些变化的功能，它会影响生物多样性的发展。

In the past they had sometimes been theated to three-legged creatures form venus, or tall, thin men form Mars, or even snakelike horrors form somewhere more distant.

在以前，他们曾被从水星来的长有三只脚的生物，或从火星来的高而瘦的男人，或从更远的星球上来的外型像蛇一样的生物所吓到。

The thesis to be set forth in the present book is that man has both a nature and a 'history'. Human evolution has two components, the biological or organic, and the cultural or superorganic.

正如Darwin认为人类是生物变异的结果，因此人与其他的生物是有亲戚关系的，Dobzhansky也将他的演化观延伸到对人类本性的剖析。

Investigation, conducted at Huocheng, Xinjiang Autonomous Region, revealed that all characteristics of Xinjiang wild apples appeared in a fair variation. Results indicated that, every characteristic exists biodiversity; most coefficients of variation of characteristics were larger than 0.2%; there were a great number of gene types among which two characteristics (the resistance and crown density) were in a significant variation.

生物多样性是指一定空间范围内多种多样生物体有规律结合在一起的总称，生物多样性是人类赖以生存和经济可持续发展的物资基础，已被联合国环境规划署确认为与全球气候变暖、臭氧层破坏和有害废物转移息息相关并列的全球4大环境问题之一，成为生态科学的热点[1]。

There are one hundred and ninety-three living species of monkeys and apes.

& &有193生物物种的猴子和猩猩。目前已有92所，其中有头发。

It gives the electron beam enough energy to pass through biological samples thicker than 5 micrometres.

产生的电子束具备足够的能量穿过厚度大于5微米的生物样品（译者注：一般生物样品在观察电镜时，需要将样品切成大于100纳米的超薄切片，从而有可能破坏整体结构

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。