所有者类型是一个所有者对象参数化的对象的类型。

Ownership types are types of objects that are parameterized by an owner object.

youdao

清单1实例化一个默认的树查看器；您也可以定制树，并用树对象作为参数，用构造函数实例化树查看器。

Listing 1 instantiates a default tree viewer; you can also customize the tree and instantiate the tree viewer by using a constructor with a tree object as the parameter.

youdao

第3步：实例化参数对象。

Step 3: Instantiate the parameters object.

youdao