常见例句用作名詞 (n.)He found that people who had had cowpox seemed to be safe from catching smallpox.他發現凡患過牛痘的人似乎對於天花具有免疫力。Jenner's experiment with cowpox opens up a new horizon in disease prevention.珍納毉師的神奇牛痘實騐展開了疾病預防的新頁。 返回 cowpox