六级听力如何训练:vaginal yeast infection是什么病

vaginal yeast infection是什么病 vaginal yeast infection是种什么病？ infect的用法 ~（infect）什么意思？？ Yeast nitrogen base 到底是什么？ influence,affect,infect,effect有什么区别 谁能帮我下载：酵母菌的分类学研究the yeast：a taxonomic study NO artificial preservatives,color,corn,daily,gluten,staech,sweeteners or yeast 帮我翻译一下Glucids protids emergetic value brix mold yeast salmonella Juice from cider apples is fermented with yeast.这句怎样翻译?