While warnings are often appropriate and necessary-the dangers of drug interactions, for example-and many are required by state or federal regulations, it isn't clear that they actually protect the manufacturers and sellers from liability if a customer is injured. (1999 Text1 #32)
appropriate:correct or suitable for a particular time, situation, or purpose
regulation: an official rule or order
liability：legal responsibility for something, especially for paying money that is owed, or for damage or injury
听友29561841
20世纪八九十年代的美国，很多商品的标签上写满各种警告。 例如，步梯上警告：有可能摔下来; 蝙蝠侠的斗蓬上写着，不能使你真正的飞起来。 因为在那个时代背景下，你使用商品时受到了任何伤害，都可以把商家告上法庭，而你就有可能获得赔偿。