近年在西方社会求学、工作，尤其是来到美国，笔者喝到或看到的各种饮料之中，很多都是脱咖啡因的。可口可乐、百事可乐，SPrite等流行饮料，瓶子上多数可见nocaffelne，caffeinefree或decaffeinated字体。脱咖啡因似乎成了一种时髦。咖啡有脱咖啡因的咖啡，茶叶也一样，有多种 In recent years, studying in the Western society, work, especially to the United States, I drink or see a variety of drinks, many of them are decaffeinated. Coca-Cola, Pepsi, SPrite and other popular drinks, most of the bottle visible nocaffelne, caffeinefree or decaffeinated fonts. Decaffeination seems to have become fashionable. Coffee has decaffeinated coffee, tea is the same, there are many