因为阴道的健康要靠阴道乳酸菌啊，嗯，就是做酸奶的那个乳酸菌。。。

In fact, the dominant vaginal bacteria is Lactobacillus, which is the same genus that's used to make yoghurt and cheese. "Yogurt-Lactobacillus is not all that different from the vaginal Lactobacilli," explained Hertzberger. "They all produce heaps of lactic acid, both in the vagina and in yogurt.