v.例示；举例说明
Crucially, each does not instantiate itself. 关键的是，每个都不例现自己。
You can instantiate value types in two ways. 可以通过两种方式实例化值类型。
To instantiate a property is simply to have that property. 要例现一个属性，简单的就是要拥有这属性。
[ instantiate ]的过去式
