[科学美国人60秒] SSS 2015-08-06
时间：2019-01-20 作者：英语课 分类：2015年Scientific American(八)月
Microbe organize live in you ，on you ,in soil in clouds ,and below the ocean floor ,that last bags of single self.. is particular hard to study, not only the samples are difficult to obtain ,but they can easily be contaminated with all that other microbe life, once we dig them up . so, the researchers have take special precautions when they investigated microbe life in a cold bed deep below the sea floor near Japan, This material was once dry land ,but got some emergent ,some 20 million years ago .The research team drill nearly 2500 metres below the sea floor and brought up samples.They carefully avoid contamination and evluated ... only the inner portion of the samples which were protected by the outer parts ,and analyst 1 found life to national list holding on well under the ocean .
The gram of each rich garden soil can hold a billion bacteria at 2500 meters below the sea floor .A gram of sediment 2 might be home to just a single microbe .And those deeply buried organize are quite different from microbe be found just under seafloor .In that deep layer.The microbe are most closely related to bacteria groups that thrive and far.. soils on land. The scientists that suggest that deeply buried undersea microbe might be descended 3 at once that survived when they rest habit become flooded.
Again that was 20 millions years ago ,the findings is in the journal science.in the commentary in the same issue .July of the marine 4 ,by a logical labtory says the fact they are quote a massive buried bias 5 fear has global important quote with sub-sea floor microbes playing a crucial role in carbon sea ..and earth evaluation 6 and ..staggering diversity?
She added quotes ,we still have long way to go in uncovering and understanding microbe life deep beneath the sea floor.
Thanks for the minutes.For Scientific America 60 second science.
- What can you contribute to the position of a market analyst?你有什么技能可有助于市场分析员的职务？
- The analyst is required to interpolate values between standards.分析人员需要在这些标准中插入一些值。
- The sediment settled and the water was clear.杂质沉淀后，水变清了。
- Sediment begins to choke the channel's opening.沉积物开始淤塞河道口。
- A mood of melancholy descended on us. 一种悲伤的情绪袭上我们的心头。
- The path descended the hill in a series of zigzags. 小路呈连续的之字形顺着山坡蜿蜒而下。
- Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
- When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。
- They are accusing the teacher of political bias in his marking.他们在指控那名教师打分数有政治偏见。
- He had a bias toward the plan.他对这项计划有偏见。
- I attempted an honest evaluation of my own life.我试图如实地评价我自己的一生。
- The new scheme is still under evaluation.新方案还在评估阶段。