Other researchers have also found some superacids that bond really well with nitrogen oxides, gases made of both nitrogen and oxygen that are released in car exhaust, become smog, and lead to acid rain.

另些研究人员还发现些超强酸与氮氧化物结合的很好，汽车排放的含氮和氧组成的尾气造成光化学烟雾污染，进成酸雨。

But they survive by storing nitrogen-containing wastes in their bodies and having a resident group of bacteria recycle the nitrogen into useful molecules for them.

蟑螂在其体内储存含氮的废物来存活，并且有群常住细菌将氮气回收利用成它们有用的分子。

And scientists say it will grow larger in years to come, if something is not done to reduce the amount of nitrogen in the Mississippi River.

科学家说如果不采取措施减少密西西比河的含氮量，未来几年死水区的面积。

To understand where the uric acid comes from, let's start with purines, which, together with pyrimidines, are nature's most common nitrogen-containing heterocycles.

为了说明尿酸从何而来，让我们先来了解嘌呤和嘧啶，它们都是自然界中最常见的含氮杂环。

Fish pee is full of ammonia, a nitrogen containing compound, and phosphorous, both nutrients that plants crave.

鱼的尿液富含氨，这是种含氮和磷的化合物，这两种营养物质都是植物急需的。

Now this business of taking out the nitrogenous trash is one of the urinary system's biggest jobs.

现在这个清除含氮垃圾的工作是泌尿系统最重要的工作之。

To avoid taking those extra steps, expert composters might add extra wood chips or paper products to the pile, since they have a lot of lignin — a tough component of plant cell walls which doesn't contain any nitrogen at all.

为了避免这些额外的骤，专业的堆肥者可能往堆肥中再加入些木屑或者纸质品，因为它们含有量木质素，种完全不含氮的坚韧的植物细胞壁成分。