mixin classes的意思|示意

Mixins in Jam, like ordinary classes, define types; mixin instantiations have both the type of the mixin and the type of the parent.

Jam中的mixin与普通类相似，都定义类型；mixin实例化拥有mixin的类型和父类的类型。

Jam mixins can be instantiated only on classes; unlike components in Jiazzi, there is no notion of mixin composition (however, the Jam team would like to explore such an extension).

只能根据类来实例化Jam mixin；与Jiazzi中的组件不同的是，Jam中没有mixin组合的概念(但是，Jam团队有意探究这样的扩展)。

The name mixin was used because such classes can be mixed together with other classes in various ways.

之所以使用 mixin这个名称，是因为这样的类可以以各种方式与其它类混合在一起。

In Figure 2, we've turned class Scrollable into a mixin that can extend different classes in different contexts.

在图2中，我们已经将类Scrollable转换成mixin，它可以继承不同上下文中的不同类。