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But Biden also had to soothe concerns that scrapping Bush-era plans for a more comprehensive system does not signal a breakdown of Polish-U.S.relations.
VOA: standard.2009.10.21
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It sends it's signal, it's signal - the signal that it sends is this change in voltage, and once it changes, maybe it's all done.
它发出信号,它通过电压的改变发出信号,然而一旦电压改变,细胞的使命到此就终结了
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Often that signal gets amplified so it can be used, same thing happens inside cells and there's some output that's generated.
通常这些信号要放大后才会产生作用,诱发细胞内发生一些变化,并产生某种输出信号
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Republican Representative Dan Burton said Congress should send a signal in every piece of legislation it approves that Tehran's ballistic missile and nuclear aspirations are unacceptable.
VOA: standard.2009.05.20
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Now this is a rain gauge, and it's sitting on a roof of a building, and when the water falls into this gauge, it sends a signal to the logic unit of the computer, which immediately notifies the memory bank of the computer to seek out its instructions for a rainy day.
这是一个雨量测量器，安装在一个楼房的,屋顶上，当水流入到这个测量器，它就给计算机的逻辑部件发送一个信号，计算机立即通知内存条,为下雨天找出相应的指令。
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He said under questioning the travel plan should not be seen as any kind of political signal, other than Clinton's intention, on this trip, to highlight the U.S.-India relationship.
VOA: standard.2009.07.15
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This is a signal - this passing of phosphorous - is a signal that's used very frequently in intracellular communication.
这是一种信号,一种通过磷酸来传递的信号,这种信号在细胞内通讯时经常被用到
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The alleged use of special operations troops in the raid could signal a shift away from the controversial U.S.tactic of relying on long-range missile assaults to take out terrorist targets.
VOA: standard.2009.09.15
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This same thing happens here, there's a transduction, one kind of a signal gets converted to another kind of a signal.
这两种过程是相同的,都是一个信号转换的过程,一种信号转化为另一种信号
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Iftekhar Ahmed Chowdhury, a fellow at the Institute of Asian Studies at the National University of Singapore, says the meeting appears to signal Burma's willingness to engage with the United States.
VOA: standard.2009.08.14
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This is commonly used in the immune system as well, but it's a way of amplifying a signal.
免疫系统也常使用这种方法,但这主要是一种放大信号的方式
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"She's not really trying to send any signal at all. This is a trip where we're trying to focus on India and really highlight the new strategic partnership, and again all the people-to-people ties.
VOA: standard.2009.07.15
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The heater is on, it's producing heat until a negative signal is registered, 'oh we've gone too high', and then it turns off.
加热器会开着,一直产生热量直到它得到一个关闭的信号,噢我们弄得太热了,然后就关闭了
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But they say it sends an appropriate signal that says the U.S.will not give up, and at the same time the troops will not stay in the region a day more than they must.
VOA: standard.2009.12.06
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It's a natural signal for cells to grow.
它能够促进细胞生长
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I know where your mom is. I know where your brother is buried. When people come up and say we know where so and so is it's a signal to us that the reconciliation, the coming together of Hutu, Tutsi kind of business is really in progress and we are really happy with it,".
VOA: standard.2009.04.10
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The cell that's producing the signal produces enough of the molecule so that it enters the bloodstream, it circulates throughout your body, eventually it reaches a cell at a great distance, which has a receptor for that ligand and the signal gets received.
发出信号的细胞产生信号分子,数量十分充足 能够进入到血液中,信号随着血液流遍全身,最终到达较远处的细胞,在这些细胞上有与配体配对的受体,信号被细胞接收
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One is that there's a physical space in between the two cells, so the axon of what's called the pre-synaptic neuron, or the neuron that's bringing a signal into the synapse, the axon terminal is physically separated from the dendrite of the next cell.
一是两个细胞间有一定的物理空间,所谓的突触前神经元,也就是将信号传递到突触的神经元的,轴突的末梢,同下一个细胞的树突间被物理性分离开
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Here, what's different between autocrine and paracrine is that there's some distance between the cell that produces the signal and the cell that receives the signal, but it's not too great a distance because the blood system doesn't have to be involved.
自分泌和旁分泌的区别在于,旁分泌中,产生信号的细胞和接收信号的细胞,之间存在着一定的距离,但这个距离并不远,因为血液系统并不参与
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This is a mechanism by which an electrical signal comes here, it gets translated into a chemical signal, the chemical diffuses across the gap and reinitiates a - an electrical signal in the next cell and that's one way that it happens.
这就是电信号产生的机理,电信号翻译成化学信号,化学物质扩散过突触间隙,重新激起下个细胞中的电信号,这是一种方式
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There are molecules in cells that give the DNA the signal that it's time to transcribe and express a gene, those are called transcription factors, we'll talk about them a bit later.
在细胞中有些分子能够,给DNA发出信号告诉它,是时候转录和表达某基因了,这些分子叫做转录因子,晚些时候我们会讲它们
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It gets produced in response to a signal so there's a binding of a ligand to a receptor, the enzyme that does this conversion is activated and more cycle AMP is released.
这类分子的产生是对信号做出的一种反应,当配体和受体结合时,催化这种转化过程的酶被激活,更多的cAMP释放出来
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