您可以打开或关闭对任何这些组的访问。
你不需要电灯开关、灯泡或苹果手机应用程序来打开或关闭某些东西。
You don't need a light switch or a light bulb or an iPhone app to turn something on or off.
这些反应影响着我们的遗传密码的表现方式:每个基因是如何被加强或削弱,甚至其作用机制是如何被打开或关闭,从而构成我们的骨骼、大脑以及身体的其他部位的。
These reactions influence how our genetic code is expressed: how each gene is strengthened or weakened, even turned on or off, to build our bones, brains and all the other parts of our bodies.
you could characterize them in terms of how they're gated, -- and basically how they open or close -- that's one way to talk about different types.
你可以通过闸门的类型来描述它们,这基本上也就是看它们是如何打开或关闭的-,这是一种讨论不同类型的方法。
I couldn't have told you, for example, if we look at a phosphate group, that that's going to be incredibly important in DNA, that it's also an incredibly important group when you're dealing with proteins and whether you're turning the function of a protein on or off.
怎么和化学反应相联系起来的,更不记得其它我更不感兴趣的规律,我不能告诉你,如果我们看磷酸盐,它们对于构成DNA十分重要,也是构成蛋白质的重要组份,它是否能打开或关闭一个蛋白质的功能。
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