原则上来说，生物系统的衰老和死亡都不是必然的。
It is not, in principle, necessary for a biological system to age and die.
学生还必须学习其他六门课程：物理、化学、生物、地理、政治和历史。
Students also have to learn six other subject physics, chemistry, biology, geography, politics and history.
现在用于生物燃料生产的主要植物是甘蔗和玉米。
The main plants that are used for biofuel production now are sugar cane, corn.
上帝和外太空生物很适合用这种口音讲话。
That makes it a good accent for God and creatures from outer space.
其中包括生物技术业，半导体行业，个人电脑业和航空业。
They include the biotech, semiconductor, personal computer, and airline industries.
所有生物使用和重复利用相同的水。
从她的学习成绩单可看出她算术和生物成绩很差。
Her school report shows that she is weak at arithmetic and biology.
许多人认为，信息技术和生物工程学将主宰21世纪。
Many people think that information technology and biotechnology will rule the 21st century.
这些植物为许多鱼和其他海洋生物提供了居所。
These plants provide homes to many fish and other sea animals.
我想补充的是过去我对生物学和生理学很感兴趣。
I would just add that I was deeply interested in biology and physiology.
然而，生物学家多年来都无法找到哪怕一条和语言有关的基因。
Yet for years biologists could not find a single gene involved in language.
更多的清洁能源，比如生物能和核能。
特别是昆虫和低等生物。
风险资本从计算机、生物技术和能源公司撤出。
Venture capitalists pulled back from computer, biotechnology and energy companies.
你是三年级的，修生物和化学，有上过电影课和法国经典电影。
Who is the third year in biology, chemistry, have film experience and French film classsics.
制药公司准备好计算机技术和生物科技的融合了吗？
Are the drug companies ready for the merging of computing and biotechnology?
这些细菌和生物膜以前从未在死海被发现过。
Bacterial MATS or biofilms have never been found in the Dead Sea before.
并且生物和人做了其中的大部分工作(看图表)。
And the living things doing most of that work are now people (see chart).
DNA是每一个植物和生物细胞中的信息存储成分。
DNA is the information storage component in every cell in every plant and animal.
每一种有意识的生物都处于进化和自我了解中。
Every conscious being is in the process of developing and understanding itself all the time.
今天，地球和生活在地球上的人和生物，面临着众多挑战。
Today we live in a time when the Earth and its inhabitants face many challenges.
没有一种生物所受到的赞美和厌恶会超过花园里常见的蜗牛了。
No creature has received more praise and abuse than the common garden snail.
在一项新的研究表明女性的生物钟和男性的不同。
A new study shows that women run on a different clock than do men.
全球对食品和生物燃料的需求持续增加则更是火上浇油。
Rising global demand for food and biofuels adds even more to the heat.
全球对食品和生物燃料的需求持续增加则更是火上浇油。
Rising global demand for food and biofuels adds even more to the heat.
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