Lactobacillus

例句：

1. 1. The bacteria are responsible for fermenting milk into yogurt.
   这些细菌负责将牛奶发酵成酸奶。
2. 2. Lactobacillus is a common strain of bacteria found in the human gut.
   乳酸杆菌是一种常见的存在于人体肠道中的细菌。
3. 3. In the dairy industry, lactobacillus is used to produce lactic acid and other compounds.
   在乳制品工业中，乳酸杆菌用于生产乳酸和其他化合物。