次要规则是那些规定主要规则的创建、修改和废止的规则。
The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.
The art of living is to know when to hold fast and when to let go.
起初，这些产品都是一个大胆的赌注，明智的人(常常)担心它们无法成功。当我们在9年前推出Prime服务时，它是一种新鲜的、未经实践证明的（有些人甚至会说是鲁莽蛮干的）概念： 无论什么物品都提供两天内送货上门的服务，而客户只需支付很少的包年费用。
The key to risk management is prevention and early warning.
最好的建筑是可持续的。
Girls have to go into the world and make up their own minds about things.