这个框架在象字符串这样的基本类型（接近操作系统的窗口小部件希望使用这些基本类型）和更高级的模型对象（您的代码更愿意使用这些对象）之间进行映射。

This framework maps between primitives like strings that the widgets close to the operating system expect and the higher-level model objects with which your code prefers to work.

youdao

基本上，它的工作就是将其输入数据对象的内容(特别是附件)写出到系统输出上。

Essentially, its job is to write out the contents (especially the attachment) of its input data object to the system output.

youdao

基本上，在一个面向对象的系统中，对象通过消息进行互相的交流。

Basicially, in an object-oriented system, objects communicate with each other through messages.

youdao