1·Hydrogen is used extensively in industry for the production of ammonia.
氢气大量地在工业中被用于氨的生产。
—— 《柯林斯英汉双解大词典》
2·They tightened bolts and made connections so ammonia could flow into the module.
他们拧紧螺栓并进行连接，这样氨就可以流入到舱内。
3·Then some astronomers came up with the idea that atmospheric ammonia might have acted as a greenhouse gas.
后来一些天文学家提出，大气中的氨可能起到温室气体的作用。
4·The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia.
木星的行星有非常厚的大气层，且由不同数量的氢、氦、甲烷和氨等元素组成。
5·Insects produce less ammonia than pig and poultry farming, ten times less methane than livestock, and 300 times less nitrous oxide.
昆虫产生的氨比猪和家禽少，它们产生的甲烷比家畜少十倍，而产生的一氧化二氮比家畜少三百倍。