There`s some debate over whether carbon black is harmful to humans.

关于炭黑是否对人类有害这一问题存在争议。

And black markers, for example, manufacturers can use a fine powder called carbon black.

举个例子，黑色记号笔，制造商会用一种称为炭黑的细粉末。

We thought how about replacing that carbon black with something from nature?

我们想，自然界的东西能来代替碳黑吗?

So what we are doing is we`re replacing the carbon black with the green algae.

所以我们要做的是用绿藻来取代炭黑。

In the past, the material of choice has been carbon black, a sooty substance made by the incomplete combustion of petroleum products.

过去，备选材料为碳黑，这是一种石油产品不完全燃烧后形成的黑色物质。

What is left behind is pure carbon black.

留下的是纯炭黑。

For black markers, for example, manufacturers can use a fine powder called carbon black.

例如，对于黑色记号笔，制造商可以使用一种叫做炭黑的细粉。

It contains something known as carbon black which is the pigment, gives like the black color on the paper that you print on.

它含有一种叫做炭黑的物质，它是一种颜料，在纸上印上黑色。

But concerns about it are part of the reason why Shaima Alqassab is working on a way to make ink without carbon black.

对这一问题的担忧，是沙伊玛阿尔卡萨布正在研究一种无碳黑墨水的方法的部分原因。

The carbon black can be reused to make new tires.

炭黑可重复用于制造新轮胎。

But it's made even more durable to the Sun with the material called carbon black.

但它使用了一种叫做炭黑的材料，使其更加耐晒。

The overall output of the process by weight is 40% TDO, 30% carbon black, 20% steel and 10% gas.

该工艺的总产量按重量计为 40% TDO、30% 炭黑、20% 钢和 10% 气体。

The second is carbon black, a powdery, soot-like form of carbon used to improve the durability The third is rubber.

第二种是炭黑， 一种粉状、烟灰状的碳，用于提高耐用性。 第三种是橡胶。

Producing new carbon black requires the partial burning of heavy oil residues or coal, which produces plenty of greenhouse gas emissions.

生产新的炭黑需要部分燃烧重油残渣或煤，这会产生大量温室气体排放。