deep clone 深克隆 ; 深拷贝 ; 深度克隆 ; 深复制
A deep clone of an object creates a copy of the object and a copy of everything directly or indirectly referenced by that object.
对象的深层克隆创建对象的副本以及该对象直接或间接引用的所有内容的副本。
This creates a complete copy of the current binding element object tree, also called a deep clone.
这将创建当前绑定元素对象树的完整副本，也称为深层克隆。
This method returns a copy that is a deep clone of your binding context.
此方法返回作为绑定上下文的深层克隆的副本。
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