"When we praise what the Palestinians do on security, it is meant to send a signal that progress is underway, and it is progress toward a two-state solution.

VOA: standard.2009.11.02

When it does your pancreas receives a signal that your blood glucose has started to go up, and it will secrete insulin.

这时你的胰腺会收到信号,你的血糖水平开始升高了,它就会分泌胰岛素

耶鲁公开课 - 生物医学工程探索课程节选

Another characteristic of the synapse is that the post-synaptic membrane, the membrane of the cell which is going to receive the signal has receptors on it.

突触的另一个特征是,它们都有一个突触后膜,这个膜上含有受体,可以接受信号

耶鲁公开课 - 生物医学工程探索课程节选

German Chancellor Angela Merkel said it is important to send a clear signal to the Afghans that more responsibility for running and securing their country is coming their way.

VOA: standard.2009.09.07

Is it really your body that will signal this to you?

真的是你们的身体给你们信号的吗

耶鲁公开课 - 聆听音乐课程节选

Georgian political analyst Romaz Sakbarelidze at the Strategic Research Center in Tbilisi noted the NATO exercises were planned long before the August conflict, and said it would send the wrong political signal to cancel them now.

VOA: standard.2009.04.30

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。

哈佛公开课 - 计算机科学课程节选

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

Well, it might be that this signal is a signal to divide.

这可能是那些让细胞开始分裂的信号

耶鲁公开课 - 生物医学工程探索课程节选

If the temperature drops below a certain level it sends a signal, 'turn on the heat', and that signal stays on until it gets a negative signal to turn off.

如果温度降到一定程度以下时,探测器会发送一个信号,打开加热器,直到加热器再收到关闭的信号,它就会一直开着

耶鲁公开课 - 生物医学工程探索课程节选

It's a natural signal for cells to grow.

它能够促进细胞生长

耶鲁公开课 - 生物医学工程探索课程节选

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

耶鲁公开课 - 生物医学工程探索课程节选

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

耶鲁公开课 - 生物医学工程探索课程节选

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

耶鲁公开课 - 生物医学工程探索课程节选