Russia's military says the hypersonic missile can travel 2,000 kilometers and flies 10 times faster than the speed of sound, which makes it hard to shoot down.

俄罗斯军方表示，种高超声速导弹可以飞行2000公，飞行速度是音速10，使得它很难被击落。

Here comes the boom, a supersonic object is traveling faster than the speed of sound.

轰隆隆响声传来，一个超音速物体正在以高于声速速度在空中飞行。

Still, mach I or the speed of sound is not something that`s reached by passenger planes, at least not anymore.

仍然，马赫一号或声速不是客机所达到，至少不再如此。

So I see times faster than the speed of sound.

所以我看到比声速快多少。

They looked whipped by wind, and for good reason — Sustained wind speeds in Neptune's atmosphere have been clocked at over 2000 kph: Faster than the speed of sound on Earth!

它们看起来就像是被风吹过一样，而且么说有充分理由——海王星大气中持续风速已经超过2000公每小时：比地球上声速还快！

It's a layer of water where the speed of sound is at its minimum, and sound waves can go thousands of miles before disappearing.

是一层声速最低水层，声波可以传播数千英消失。

" And roughly, if we warm up the ocean temperature by one degree, the sound speed change-it would be four meters per second. And this is a very sensitive change."

“粗略地说，如果我们把海洋温度升高1度，声速就会改变--那就是每秒4米。是一个非常敏感变化。”

The concept will allow people to travel between large cities at the speed of sound, allowing passengers to go from San Francisco to Los Angeles in about 30 minutes.

一概念将使人们以声速在大城市之间穿行，乘客可在 30 分钟内从旧金山到达洛杉矶。

The new weapon is called hypersonic because of its extremely high speed. It travels as fast as several times the speed of sound.

类新型导弹之所以叫高超音速是因为其速度极快，是声速数。

He said a Russian aircraft had launched the hypersonic missile from Russian airspace into Ukraine.

他说，一架俄罗斯飞机从俄罗斯领空向乌克兰发射枚高超声速导弹。

Air temperature changes this, but the sound barrier can typically be broken at around 760 miles per hour.

温度对声速会有影响，但音障通常会在每小时760英左右被打破。

760 miles per hour is about the speed of sound at sea level.

每小时760英相当于海平面上声速。

In the strong cough, that air can travel at speeds close to the speed of sound.

剧烈咳嗽过程中，空气流速接近于声速。

The only thing that I didn't know when I landed is did I break the speed of sound, because you know once you're in free fall, you know you're fast but you have absolutely no indication of how fast you actually are.

唯一不确定是，当我着陆时，我不知道自己是否超过声速，因为你知道一旦开始自由落体，速度会很快，但你完全不知道实际上到底有多快。

But already I see here the speed of sound, which is what we have in the table here.

但是我已经在看到声速，是我们在表格看到。

We're looking at faster than the speed of sound, Earth's surface.

我们看到比声速快，地球表面。

You were even faster than the speed of sound.

你超过声速。

It traveled blank times faster than the speed of sound.

它传播速度比声速快多少。

Ten-second trivia: While not constant, the speed of sound is typically how fast?

虽然声速不是恒定，但通常有多快？

Number one was that it traveled 50 times faster than the speed of sound.

第一题是它行进速度是比声速快50。