A signal flare is usually shot when troops make a sudden attack at night.

部队夜间动突然袭击时通常信号弹。

And here is what would happen if we broadcast our existence into outer space?

们来看看，如果外太空们的存在信号会怎样？

That is, any signal that's emitted today.

任何今天的信号。

Another prank involved a pocket device Wozniak built that could emit TV signals.

在另一场恶作剧中，使用到了沃兹尼亚克明的一个以电视信号的便携装置。

(Electrical signals firing) Or we can watch them as they sparkle with electrical activity.

（电信号声）们也以看着它们迸出电信号的火花。

The underwater drones then fire signals, measuring variations in height down to the tiniest detail.

然后水下无人机信号，量高度的变化，甚至是最小的细节。

They work by sending out pulses of high-frequency sound and then interpreting the reflections as images.

机理过程是，通过高频声波脉冲信号对反信号进行成像解读。

I mean for a woman who is not interested you sure are sending some mixed signals.

对于一个不怎么感兴趣的女人来说，你就是在暧昧信号。

But the FAA said signal strength and the transmitting direction of 5G towers could be the problem.

但美国联邦航空局表示，5G塔的信号强度和方是问题所在。

As the boat begins to sink, Violet creates a signal fire and a rescue boat assists them.

当船开始下沉时，维奥莱特了一个信号火，一艘救援船帮助了他们。

The European Union requires AIS broadcasts from all ships longer than 15m, while Americans spare those shorter than 19m.

欧盟要求所有长度超过15米的船只AIS信号，而美国则不要求长度小于19米的船只AIS信号。

The sturdy steel is generally used in 5G base station signal receivers, signal transmission filters and integrated circuit boards.

坚固的钢一般用于 5G 基站信号接收器、信号滤波器和集成电路板。

Now, this is not just conceptual: this tablet is transmitting Bluetooth, and I'm wearing the vest right now.

这个平板电脑正在蓝牙信号， 而且正穿着这样的背心。

Mobile phones get signals from nearby radio transmitters that permit the devices to connect to frequencies to make calls and send data.

移动电话从附近的无线电器接收信号，进而使该设备连接到频率进行通话和送数据。

The state news agency said that a launching platform set up to fire rockets into Israel had been destroyed, killing five militants.

国家新闻机构称一座用于以色列火箭信号的台被毁，导致5名军人死亡。

You sure are sending some mixed signals.

你就是在暧昧信号。

You have a transmitter who is sending a signal.

您有一个正在送信号的器。

The brain can counter it if it's not a good time to urinate by sending another signal to contract the external urethral sphincter.

通过另一个信号来控制尿道外括约肌大脑会判断现在是不是排尿的合适时机。

But keep in mind that we've been broadcasting signals into outer space since the sixties, and we have yet to receive a reply.

但是，请牢记，早在 60 年代们就已经外太空出信号了，并且们还没有收到任何回复。

Crews are taking soil samples, flying drones and helicopters with transmitters to measure the electromagnetic field of the subsurface and map the layers of rock below.

工作人员正在采集土壤样本，操纵带有信号器的无人机或驾驶直升机来检地下电磁场，并绘制岩层图。