美国科学60秒 SSS 2015-01-08
时间：2018-12-24 作者：英语课 分类：2015年Scientific American(一)月
This is scientific American 60 seconds science. I'm *, got a minute ?Genetically 1 engineered bacteria already proves some products are commercial interests or biometical importance such as insulin. And coaxing 2 the organism to do so can be done with a cleaner setup and produce fewer environmentally problematic by-products than other production methods. But the baceria approach is still limited to just a few products due to not efficient. Now, a research team at Harvard's Wyss institute for biologically inspired engineering says they've deleloped a system to get microbes to produce chemicals dramatically faster and more efficently. The technique uses Dr. william principles of multiple itrations what they call rounds of evolution. The study isn't the proceedings 3 of the national academy of sciences. The researchers introduced mutations in specific genes 4 related to their expression of the desired molecule 5. It then tweeted the bacteria so that genes for anti-biotic resistance only become active when the cells make some of softer product. When the anti-biotic present, cells died and do not produce enough of the product because those cells also do not have the life-saving resistance to the anti-biotics. The surviving cells however show promise. The system takes the cells through this evolutionary 6 cycle repeatedly eliminating and product bacteria each time. And as a result, microbes that sypathize the chemical interests with 30 times the output of current compound production systems and up to the 1,000 times faster. The researchers say their programe could work to a efficiently 7 produce a wide variety of useful compounds which might make vats 8 of modified bacteria tomorrow's leaders and commercial chemical manufacturing.
- All the bees in the colony are genetically related. 同一群体的蜜蜂都有亲缘关系。
- Genetically modified foods have already arrived on American dinner tables. 经基因改造加工过的食物已端上了美国人的餐桌。 来自英汉非文学 - 生命科学 - 基因与食物
- No amount of coaxing will make me change my mind. 任你费尽口舌也不会说服我改变主意。
- It took a lot of coaxing before he agreed. 劝说了很久他才同意。 来自辞典例句
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因，所以能够活得很长。 来自《简明英汉词典》
- Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
- A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
- This gives us the structural formula of the molecule.这种方式给出了分子的结构式。
- Life has its own evolutionary process.生命有其自身的进化过程。
- These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
- The worker oils the machine to operate it more efficiently.工人给机器上油以使机器运转更有效。
- Local authorities have to learn to allocate resources efficiently.地方政府必须学会有效地分配资源。