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We have a growing number of followers on Twitter and our own popular YouTube channel.
VOA: special.2009.10.16
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For these purposes think about a channel, it only allows sodium to go through for example.
基于此目的,我们来讲离子通道,拿仅允许钠离子通过的通道作为例子
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Do you change the channel a lot?
你会一直换频道吗？
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Only the English Channel separated the British people from a German army that seemed unbeatable.
VOA: special.2011.05.12
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A state where it's closed, so imagine a channel with a lid on top of it; when it's closed nothing can go through the channel, when it's open then things can go through.
一种是闭合状态,想想一个有盖子的通道吧,当盖子合上的时候任何东西都不能通过,而打开时就畅通无阻
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He rode to the port of Dover. He crossed the English Channel on a ship.
VOA: special.2009.01.14
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So, what happens, this is another view of a sodium channel, so this is actually looking a little bit more at the protein structure.
那么，这里发生了什么，这是钠离子通道的另一张图片，在这种蛋白质结构中,它看起来更复杂一点。
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His work was described in a television program on the National Geographic Channel.
VOA: special.2011.04.26
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If you haven't seen Law & Order, the way to see Law & order is to go to a random TV set, at a random time, and turn on a random channel.
你要是没看过,随便去找个电视机,在任意时段任意频道都能看到
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The Food Network is a cable channel that began in nineteen ninety-three.
VOA: special.2010.12.27
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So, investors will have a tendency to try to hide -or people who sell investments will try to channel the good investments to their friends and dump the bad stuff on other people.
所以,投资者倾向于掩盖,或者说是投资产品的销售者会试图,把好的投资产品卖给自己的朋友,而把那些差的留给外人
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Still one Boeing executive, sought to put a positive spin on the industry's future during an interview with France 24 news channel.
VOA: standard.2009.06.16
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It can exist in - a gated ion channel - can exist in one or two states.
它们能够存在于,门控离子通道有一种或者两种状态
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He says the English Channel beneath his B-24 aircraft was like a busy highway.
VOA: standard.2009.06.02
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And when we talk about any type of ion channel, there are just tons of different kinds of ion channels, and you can characterize them in a few different ways.
而当我们讨论任何一种离子通道时，离子通道有非常多种，你可以用几种不同的方法来描述它们。
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Until recently, hundreds of illegal immigrants, many of them from Afghanistan, hoping to cross the English channel to what they hoped was a better life in Britain.
VOA: standard.2009.09.22
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The one that's on the top here is called ligand-gated ion channel and an ion channel is a protein that sits in the surface of a cell.
最上面的这个叫作配体门控离子通道,离子通道是一类位于细胞表面的蛋白
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There is not much there." For now,Palin is splitting time between appearing as a commentator for the Fox News Channel, giving paid speeches and campaigning for Republican candidates.
VOA: standard.2010.02.09
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And that's all that's big enough to pass through or small enough to pass through. And if we go up even just one row on the periodic table to potassium, what we actually see is now that it's going to be too large, and, in fact, a potassium solvated with one water molecule won't go through our channel.
就是这样刚好大到它通过,或者说刚好小到它通过,即使我们再沿着周期表往下走仅仅一行到钾离子，我们看到的就将是它的个头太大了，实际上，溶解于一个水分子的单个钾离子,不能穿过我们的通道。
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Israeli officials say one way they are trying to ease water shortages in the West Bank is by pushing a project along with Jordan to channel water from the Red Sea to the Dead Sea.
VOA: standard.2009.08.01
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In some cases it might be a ligand-gated ion channel.
有时受体可能是一个配体门控离子通道
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It took several years of further experiments and analysis, but During and his colleagues ultimately concluded that the mild stress of all that activity and interaction activated a communication channel that prompts fat cells to stop releasing a hormone called leptin, which accelerates cancer growth.
VOA: standard.2010.07.14
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Because if it was a neurotransmitter activated ion channel, what would happen when the neurotransmitter bound here?
因为假如这是一个,神经递质激活的离子通道,当神经递质结合于此的时候,会发生些什么呢
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It can also happen in other ways, it could be a G-protein coupled receptor which we talked about last time, which indirectly activates another ion channel to start the electrical signal.
还可以有其他方式,可以通过G蛋白偶联受体,这我们上次谈过,它可以间接激活,另一个离子通道以开启电信号
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And actually, a question that might come up, I just explained, the sodium channel, you might say, well, how do potassium channels work then, because I can understand how you can filter something big out, but how do you filter out something small.
实际上，可能大家会问一个问题，我刚解释过，钠离子通道，你可以说，好吧，那么钾离子通道该如何起作用呢，因为我可以理解你是如何把大东西过滤掉的，但是你如何把小东西过滤掉呢？
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That change happens because something gets triggered in the membrane, and what gets triggered is a voltage gated sodium channel, which is shown here.
变化的原因是膜上某些东西被触发了,被触发的是钠离子电压门控通道,展示在这儿了
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So, for example, if we look at sodium channels, and sodium channels are some of the particularly prevalent ones when we're talking about neurons, if you think about the cell membrane, and this little green cartoon is me trying to show a sodium channel here, and in this case, you can see that it's closed, such that no ions are getting through.
比如，让我们来看一下钠离子通道，钠离子通道是我们会经常遇到的几个之一,在讨论神经元的时候，如果大家想想细胞膜，而这个绿色的小示意图就是我用来表示,钠离子通道的，在这种情况下，大家可以看到它是关闭的，因此没有离子可以通过。
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