aliphatic amine alkaloid

例句：

1. 1. Aliphatic amines are widely used in the pharmaceutical industry as antimicrobial agents.
   脂肪族胺在制药工业中作为抗菌剂被广泛使用。
2. 2. The alkaline earth metals, such as magnesium and calcium, are important components of many biological systems.
   镁和钙等碱土金属是许多生物系统中的重要成分。
3. 3. Aliphatic amines can be synthesized from various organic compounds through reaction with hydrogen gas.
   脂肪族胺可以通过与氢气反应从各种有机化合物中合成出来。