乳酸菌

lactic bacteria的用法和样例：

例句

Bacteria are what makes yogurt different from milk and cheese.乳酸菌是使优酪乳不同于牛奶和奶酪的东西。
It is fermented by lactic acid bacteria to produce lactic acid.乳糖可以被乳酸菌发本季生成乳酸。

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