At the planet's center is a huge liquid nickle-iron core.

在这颗行星是一个巨大液态铁核。

And the very large asteroid, 16 Psyche, could satisfy the entire global demand for nickel-iron for several million years.

而这颗名为“灵神星”非常大小行星，足以满足全球几万年铁需求。

And then Thomas Edison introduced the nickel-iron battery.

然后托马斯·爱迪生推出了铁电池。

Nickel-iron meteorites, in other words, metal, can also look red.

铁陨石，换句话说，金属，也可以看起来是红色。

Later, he returned to the power industry and invented the nickel-iron alkaline battery.

后来，他又回到电力行业，发明了铁碱性电池。

The core of the Earth is thought to consist of a solid nickel-iron center with a molten outer layer.

地球核被认为由一个坚固铁和一个熔融外层组成。