半乳糖体

例句：

1. 1. The enzyme plays a crucial role in the digestion process.
   这种酶在消化过程中起着至关重要的作用。
2. 2. The study of seminal fluids has led to new insights into human reproduction.
   对精液的研究已经对人类生殖有了新的理解。
3. 3. The researchers found that the bacteria could be used as a source of energy for the human body.
   研究人员发现，这些细菌可以作为人体的能量来源。