Releasing helium balloons into the sky is now banned in the Australian state of Queensland.

澳大利亚昆士兰州现在禁止向天空放飞氦气。

And if scientists are also able to extract helium 3, an isotope that's believe to be in lunar soil they think that could be used to develop rocket fuel on the moon.

如果科学家也能提取氦3，一种据信存在于月土壤位素，他们认为这种位素可以用来开发月上火箭燃料。

It's just a giant ball of hydrogen and helium gas.

它只是一个巨大氢气和氦气。

They named the element helium, after the Greek god of the sun.

他们以希腊太阳神名字将这种元素命名为氦。

The titanium case, the Ringlock system, the helium escape valve and a host of other state-of-the-art watchmaking breakthroughs make this watch the most pressure-resistant ever made.

钛金属表壳、Ringlock系统、氦阀门以及一系列其他最先进与突破制表技术，成为有史以来最耐压腕表。

But people are like, yo, Look at him he puts helium in his voice before he sings, like you just have to laugh at yourself you know.Yeah.

但是有些人就说，哟， 你看看 他唱歌前 会在他声音加入氦你只需要一笑而过 你懂 恩。

We have three days, at best, before the helium leaks out of those balloons.

我们最多有三天时间，不然气氦气就漏光了。

But the spacecraft suffered helium leaks and thruster outages.

但是飞船遭遇了氦泄漏和推进器故障。

So it’s roughly 90% hydrogen, it’s maybe 8% helium, and the rest of it’s made up of things like iron, carbon, oxygen, nickel.

大概有90%氢气，8%氦气，其余成分有铁、碳、氧和镍。

Next up, a helium filled floating mode of transportation.

接下来要介绍是一种利用氦气做能源进行漂浮飞行方法。

There's some helium and traces of heavier elements.

太阳含有氦和少量较重元素。

As a result, all the collected atoms of hydrogen and helium would begin to become attracted to each other, so they would condense and shrink.

所有收集到氢原子和氦原子将开始互相吸引，因此它们会凝结和收缩。

Atoms of elements got broken down into smaller ones like neon and helium.

成分原子被分解成更小原子，如氖和氦。

5 imperial gallons of the liquid helium. 5 You know how much helium that is?

英制加仑液态氮你知道那是多少氮气吗？

So there are two compartments here, one with air and then one with helium.

这样大气就有两种区域， 一种面是空气一种面是氦气。

The airship is filled with helium gas and does not have a crew.

飞艇充满氦气，没有船员。

Investigations have centered on helium leaks and thruster problems with Starliner.

调查主要集在 “星际客机” 氦气泄漏和推进器问题上。

You can't sink. With all that helium in you, you're lucky you don't float away.

你落不了，体内充满了氦气遇水不飘走就算你走运啦。

Helium is common in labs like this.

对于这样实验室来说，氦气很常用。

I specialize in measuring stable isotopes, things like carbon and helium and other stable isotopes.

我擅长测量稳定位素，如碳和氦以及其他稳定位素。