They are made up of hydrogen and helium.

它们是由氢和组成。

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气球。

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

它只是一个巨大氢气和气球。

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。

Here, individual hydrogen nuclei can be used to form helium… a process that releases energy.

在这里，单个氢核可以用来形成… … 释放能量过程。

You're not going to be able to fly with the helium balloons.

用气球飞不起来。

We were flying these toy helium balloons before the Disney Pixar film " Up."

在迪士尼皮克斯《飞屋环游记》之前，我们就在飞这些玩具气球。

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

我们最多有三天时间，不然气球里气就漏光了。

It just slowly fuses hydrogen into helium, glowing feebly.

它只是慢慢地把氢气融合成气，微弱地发光。

But the spacecraft suffered helium leaks and thruster outages.

但是飞船遭遇了泄漏和推进器故障。

Next up, a helium filled floating mode of transportation.

接下来要介绍是一种利用气做能源进行漂浮飞行方法。

Yes, helium, just like those birthday balloons.

是，就是生日派对上气球里用那种气。

It ended when the first stars started fusing hydrogen into helium.

当第一批恒星将氢融合为时，黑暗时代结束了。

Stars are mostly made up of hydrogen, with smaller amounts of helium and other elements.

恒星主要是由氢和少量及其他元素组成。

Every gas, will freeze. - Every gas except helium.

每一种气体，都会冻结。- 除了气之外所有气体。

Jupiter's atmosphere is made up mostly of hydrogen and helium.

木星大气层主要由氢和组成。

There's some helium and traces of heavier elements.

太阳中含有和少量较重元素。

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

成分中原子被分解成更小原子，如氖和。

Mission leaders plan to keep examining the thruster problem and helium leaks.

任务领导人计划继续检查推进器问题和气泄漏。

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？