As a result, more smelting was required, Koutsodendris said.

库索德里斯表示，因此需要进行更多熔炼。

This date is some 1,500 years before the invention of smelting.

日期是融化金属技术之前1500年。

You can imagine, the Industrial Revolution, lead smelting, and all that kind of thing.

你可以想象，工业革命，铅冶炼，以及所有类似的事情。

So smelting was a significant technological advance.

所以冶炼是一项重大的技术进步。

Now, the first evidence of copper smelting dates to 5000 B-C-E in Southwest Asia.

现 第一个铜冶炼的证据可以追溯到公元前5000年西南亚。

Smelting uses a lot of energy and, depending on the type of battery, can release harmful by-products.

冶炼过程消耗大量能源，并且根据的类型，可能会释放有害的副产物。

But using commodity money means you have to make commodity money, which is solved by production technologies–like smelting.

但是使用商品货币意味着你必须制造商品货币，它是通过冶炼等生产技术来解决的。

The heart of most battery recycling is a process called smelting, which is basically just melting the metallic parts.

大多数收的核心是一个叫做熔炼的过程，也就是将金属部分熔化。

And within 4000 years, smelting came to be practiced throughout Europe and Asia.

4000年之内 熔炼开始欧洲和亚洲盛行。

Smelting would be one of those advancements.

冶炼将是这些进步之一。

That said there's not much evidence. Smelting arose independently in multiple places.

也就是说没有太多的证据 熔炼是多个地方独立产生的。

So we're not going all the way back to the mine through smelting, transportation, processing.

所以我们不会通过冶炼、运输、加工一路到矿山。

Digging up and smelting nickel is a grubby trade.

开采和冶炼镍是一种肮脏的生意。

Since the fateful smelting, economic output and greenhouse-gas emissions have risen in tandem.

自致命的冶炼以来，经济产出和温室气体排放量同步上升。

I mean, the earliest record of iron smelting is within sub-Saharan Africa.

我的意思是，最早的铁冶炼记录是撒哈拉以南非洲地区。

And there's no real advances in smelting to mean better iron for that armour.

而且，冶炼技术上并没有真正的进步，意味着无法为这种盔甲提供更好的铁材。

As long as the steel factory's not smelting.

只要钢铁厂不冶炼。

But, so, iron smelting at 800 BC, what does it mean?

但是，公元前800年的炼铁技术意味着什么？

Iron-ore slag, a byproduct of the iron-ore smelting process, can be used in a similar way.

铁矿石冶炼过程的副产品——铁矿石炉渣，可以以类似的方式使用。

An experienced worker in a steel foundry may not master all the steps of smelting metal.

一个有经验的钢铁铸造厂工人可能并不掌握所有冶炼金属的步骤。