卤素，大自然的馈赠从结构简单、随处可见的氯甲烷到结构复杂的含氯抗生素万古霉素，自然界可以创造出各种各样的卤素：细菌、真菌、动植物和人体自身都在生产着卤素；同时，森林火灾、火山喷发和其它地热事件也都会产生卤素。卤素，这类人们熟悉又陌生的一族元素，正在为人类 Halogen, Nature’s Gift From the simple, ubiquitous chloromethane to the more complex chlorine-containing antibiotic vancomycin, nature can create a wide variety of halogens: bacteria, fungi, flora, fauna and the human body are all producing Halogen; the same time, the forest fire, volcanic eruptions and other geothermal events also produce halogen. Halogen, a family of familiar and unfamiliar elements of this kind, is being used by humans