2015年6月英语六级阅读复习资料3— 生物工厂

2015-06-11 15:25:09来源：网络

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　　Previous work has isolated the protein that makes these miniature compasses. Using genetic engineering, the team managed to persuade a different bacterium—Escherichia coli, a ubiquitous critter that is a workhorse of biotechnology—to manufacture this protein in bulk.

　　他们先要把制造这种微型罗盘的蛋白质分离出来，并采用基因工程技术设法让另一种细菌—大肠杆菌来批量生产这种蛋白质，而大肠杆菌在生物体内普遍存在，是生物工程中的常用苦力。

　　Next, they imprinted a block of gold with a microscopic chessboard pattern of chemicals.

　　然后他们用化学方法绘制微小的棋盘图案，并把图案的每一块染成金黄色，

　　Half the squares contained anchoring points for the protein.

　　每块区域的一半用该蛋白质做固定点，

　　The other half were left untreated as controls.

　　另一半不做任何处理作为对照，

　　They then dipped the gold into a solution containing the protein, allowing it to bind to the treated squares, and dunked the whole lot into a heated solution of iron salts.

　　再把这些金黄色的棋盘浸入含蛋白质的溶液中，并允许溶液中的蛋白质与棋盘上的固定蛋白质结合，最后把该棋盘全部浸入加热的铁盐溶液中。

　　After that, they examined the results with an electron microscope.

　　他们再用电子显微镜观察实验结果，

　　Sure enough, groups of magnetite grains had materialised on the treated squares, shepherded into place by the bacterial protein.

　　果然，棋盘上的固定蛋白质区域产生了成群的磁铁颗粒，并由细菌蛋白质控制在相应位置。

　　In principle, each of these magnetic domains could store the one or the zero of a bit of information, according to how it was polarised.

　　基本上每个磁域都能按极化的方式存储一个字节信息的1或0。

　　Getting from there to a real computer memory would be a long road.

　　但是要制成真正的计算机存储器还有很长的路要走，

　　For a start, the grains of magnetite are not strong enough magnets to make a useful memory, and the size of each domain is huge by modern computing standards.

　　首先对于可用的存储器来说，那些磁铁颗粒的磁性还不够强大，并且每个区域的尺寸对现在计算机标准来说太大了。

　　But Dr Staniland reckons that, with enough tweaking, both of these objections could be dealt with.

　　但Staniland认为，只要做些足够的调整，那些困难都将不是问题。

　　The advantage of this approach is that it might not be so capital-intensive as building a fab.

　　这种方法的好处就是不用像因特尔那样如此资源密集地去建造新工厂，在制造不断发展的产品时也不需要同样多的设备，

　　Growing things does not need as much kit as making them. If the tweaking could be done, therefore, the result might give the word biotechnology a whole new meaning.

　　所以，如果这种调整可以成功的话，生物技术将会有一个全新的定义。

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