So now the scenario is nitrogen-fixing maize, nitrogen-fixing rice.

所以现在的情况是固，固水稻。

So the future for nitrogen-fixing cereal crops is looking bright.

因此，固谷类作物的前景片光明。

They found that it's packed with nitrogen-fixing bacteria usually found in the soil.

他们发现它充满通常在土壤中发现的固细菌。

Hopefully in my lifetime, nitrogen-fixing maize commercially available around the world.

希望在我有生之年，固可以在全世界买到。

Van Deynze says early plant breeders may have inadvertently got rid of corn's nitrogen-fixing proficiency long ago.

范·德恩兹表示，早期植物育种家可能很早之前就在无意中除的固能力。

Based on genetic evidence, scientists have thought that nitrogenase first evolved around 2 billion years ago.

科学家们基于基因遗传证据认为约20亿年前固酶就已经完成次进化。

An earlier arrival for nitrogenase also may mean that the enzyme evolves more easily than was previously believed.

固酶存在时间的提前也可能揭示酶的发展比科学家早些推测的更为简单。

Rhizobia is a nitrogen-fixing bacteria up to 3 micrometers long and without it, that sort of agricultural production is impossible.

根瘤菌是种长达3微的固菌，没有它，不可能实现这种农业生产规模的。

Nitrogen fixation is the process of producing ammonia.

固是产生氨的过程。

Now unfortunately, at the moment those nodules don't get infected with the nitrogen fixing bacteria.

遗憾的是，目前这些根瘤还未能被固细菌感染。

Sputnik Planitia is mainly composed of slowly churning frozen nitrogen, and we've never seen anything like it in our solar system.

史波尼克高原主要由缓慢搅动的固组成，我们从来没有在太阳系中见过类似的事物。

However, I believe we are well on track to delivering nitrogen-fixing cereals.

然而，我相信我们正稳步推进，有望实现固谷物的研发。

Cowpea is actually a nitrogen-fixing crop related to soybean, and it produces, like soybean, a protein-rich seed.

豇豆实际上是种与大豆相关的固作物，它像大豆样产生富含蛋白质的种子。

Now, unfortunately, the nitrogen-fixing symbiosis is limited to legumes like that soybean and their relatives.

遗憾的是，目前固共生仅限于大豆及其近缘的豆科植物。

Rhizobia is a nitrogen-fixing bacteria up  to 3 micrometers long and without it, that sort of agricultural production is impossible.

根瘤菌是种长度可达 3 微的固细菌，没有它，这种农业生产是不可能的。

But researchers at the University of Washington now have evidence for the existence of nitrogenase in bacteria going back some 3.2 billion years.

但华盛顿大学研究人员的证据表明早在约32亿年前固酶就存在于细菌中。

But if we're going to really cure our addiction to inorganic fertilizers, we also need the nitrogen-fixing bacterial symbiosis.

但若要真正戒除对无机肥料的依赖，我们还需依赖固细菌的共生关系。

So we are working on transferring that nitrogen-fixing symbiosis from legumes to our cereal crops.

因此，我们正致力于将这种固共生关系从豆科植物转移到我们的谷类作物上。

But most of the biosphere's usable nitrogen is the result of bacteria employing an enzyme called nitrogenase to pull nitrogen out of the air.

但生物圈中的大部分可用都是细菌利用种名为固酶的酶气从空气中分离出来的。

Essentially, the nitrogen-fixing symbiosis is really just a modified form of the mycorrhizal fungal symbiosis with a few tweaks.

本质上，固共生关系实际上只是菌根真菌共生关系的种改良形式，经过几处调整。