So, they cannot make enough haemoglobin.

因此，他们不能制造足够的红。

Never mind, said he, chuckling to himself. The question now is about haemoglobin.

这没有什么，他格格地笑了笑，现在要谈的是质的问题。

The body needs a particular amount of haemoglobin to work correctly.

人体需要一定数量的红才能正常工作。

This means they have fewer haemoglobin molecules to help move and hold oxygen.

这意味着它们有较少的红分子来帮助运输和保存氧气。

The carbon monoxide permanently binds to haemoglobin in your blood, blocking oxygen from binding.

一氧化碳会永久地与你液中的红结合，阻止氧气的结合。

There are many reasons why haemoglobin levels may drop.

导致红下降的原因有很多。

Sickle Cell Anemia affects a protein in the red blood cells. This protein is called haemoglobin.

镰状细胞性贫影响红细胞中的一种质。这种质被称为红。

But the most common cause of low haemoglobin levels, or anaemia, is lack of iron.

但导致红低或贫的最常见原因是缺铁。

And they become sticky. Bad haemoglobin also causes red blood cells to die more quickly than healthy red blood cells.

并且液会变得粘稠。不良红还会导致红细胞比健康红细胞更快死亡。

They can do this because inside the red blood cells, there is a very important molecule called haemoglobin.

它们之所以能做到这一点，是因为在红球内部，有一种非常重要的分子，叫做红。

But carbon monoxide binds to haemoglobin more strongly than oxygen does.

但是一氧化碳与红的结合力比氧气更强。

But half of the population has developed polycythaemia, the condition of too much haemoglobin (Hb).

但一半的人口出现了多症，即红（Hb）过多的状况。

It's plant-based haemoglobin so it's that kind of irony taste, you know, that you have with meat.

它是基于植物的红， 所以它有一种讽刺的味道， 你知道，你有肉。

The company reckons its base-editing drug will work better than CRISPR-Cas9 and deliver higher levels of haemoglobin.

该公司认为，其碱基编辑药物将比 CRISPR-Cas9 效果更好，并能提供更高的红。

About 5 per cent of people will be anaemic and 5 per cent will have too much haemoglobin, a condition called polycythaemia.

约5%的人会贫，而5%的人红细胞过多，这种情况称为多症。

Both are caused by genetic faults in the instructions for making haemoglobin, a protein that helps red blood cells carry oxygen.

这两种疾病都是由于红（一种帮助红细胞携带氧气的质）制造指令中的基因缺陷引起的。

The reason is that, besides its well-known role in haemoglobin, the oxygen-transporting molecule in the blood, iron is also involved in many aspects of brain development.

因为除了在液中的氧气运输分子——红中发挥着众所周知的作用外，铁元素还在许多方面参与了大脑的发育。

Giving a small dose is the gold-standard way to measure levels of haemoglobin, a molecule found in red blood cells, and an important statistic for endurance athletes.

给予小剂量是测量红的黄金标准方法。红是红细胞中的分子，也是耐力运动员的重要统计数据。

After one year, they retest the haemoglobin level of the population and find that now only half of the population has a normal level and no one is anaemic.

一年后，他们重新检测了居民的红，发现现在只有半数居民的正常，没有人贫。

If we had an approach that could go beyond cutting and essentially find and replace, correct that defect and restore the normal haemoglobin protein, that should be a definitive cure.

如果我们有一种方法可以超越切割并从根本上找到和替换，纠正该缺陷并恢复正常的红，那应该是一种彻底的治愈方法。