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Today,VOA broadcasts to satellites in space that send the signal back to stations on the ground that transmit programs with a clear signal.
VOA: special.2010.12.08
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They often involve the generation of what are called 'second messenger' molecules which carry the signal further into the cell.
过程中通常会生成一种叫做,第二信使的分子,将信号更深入地传递至细胞内部
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What happens is a negative symptoms are alleviated, and we start to resurrect the signal in this part of the brain.
结果阴性症状得到了缓解，而大脑中这一部分区域的信号,也开始得到恢复。
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As soon as Brown spoke, the signal was given.
VOA: special.2009.07.02
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The signal comes in the form of molecules which we're going to call throughout the lecture here 'ligands'.
信号通常以分子的形式来传递,在这门课里我们把这种分子叫做配体
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Then again. That was the signal to attack.
VOA: special.2009.11.05
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It predicts that the best timing is when the conditioned stimulus, which is the signal, comes before the unconditioned stimulus, which is what you have to prepare for.
它预测，最佳的时机,莫过于作为信号的条件刺激，出现在需要你做准备的，非条件刺激之前。
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"Supporters of Iran or affiliates such as Hezbollah or Hamas, they quickly have picked up on the signal that Iranian influence is perhaps not as valuable as Turkish influence."
VOA: standard.2010.07.26
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The two accounts are extremely different but they both Signal the unique position and dignity of the human being.
这两种描述是截然不同的，但是它们都,表明了人类特有的地位和尊严。
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To many of the people there, Lincoln's victory was a signal that ended the state's ties to the Union.
VOA: special.2009.07.16
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Listen for a while and your body almost will start to tell you start to signal to you, where the downbeat is.
听一会,然后你们的身体大致才会告诉你们,开始给你们信号,告诉你重拍在哪里
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which mean "help me." Frederick Stanley Mockford created the mayday call signal in the nineteen twenties.
VOA: special.2010.04.18
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The author is a signal, is what Foucault calls a "function."
作者是一个标志，就像福柯所说的“功能“
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Everyone cheered wildly when a signal was given and a huge cloth fell from the statue.
VOA: special.2010.05.06
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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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In most places in the world, a green light is a signal to move ahead.
VOA: special.2010.05.23
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And,you may or may not be intested in the motion, as I am, but you might say: what is the signal good for?
对于情感来说，你们或许有兴趣，也有可能和我一样觉得没意思，但你会问，这种信号什么用处？
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The explosion was a signal for all Confederate guns surrounding the fort to open fire.
VOA: special.2009.08.13
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They only kill cells that have the signal which stimulated them.
只能杀死那些带有能激活,它们的标记信号的细胞
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That tiny part sent a signal to computers that the launch had taken place.
VOA: special.2009.07.01
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A reaction performed by one enzyme creates a product that stimulates another enzyme that creates a product, and stimulates another enzyme, and through this cascade of reactions you amplify and carry the signal forward.
一种酶催化生成的产物会活化另一种酶,而它催化的产物又能激活其他酶,催化反应生成另一种产物,通过这层层反应,信号被放大,并不断向前传递
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An electrical signal is then sent to the prosthetic arm, telling it to move.
VOA: special.2009.03.10
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The third way that we--that composers signal to us that we pick up almost intuitively the whereabouts of downbeats is through patterns of accompaniment. We'll call it range.
第三条途径,是作曲家给我们的信号,让我们几乎能马上挑出,哪个是重拍的途径,是通过伴奏的样式,我们称之为音域
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The device sends a signal to a computer at the back of the car.
VOA: special.2009.11.03
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And the laughter is a signal this isn't real.
笑就是说明它是闹着玩的一个信号。
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That explosion would signal the other guns surrounding the fort to open fire.
VOA: special.2009.08.06
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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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Engineers believed the warning signal was wrong and the shield was locked.
VOA: special.2009.06.17
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That signal is carried here, for example, by the concentration of second messengers - the concentration of something else.
这里这个信号由,第二信使的浓度,即另一种物质的浓度来传递
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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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