是复制了数据而不是引用了两次数据。
Data have been duplicated instead of being referenced twice.
使用引用形参，函数可以直接访问实参对象，而无须复制它。
By using a reference parameter, the function can access the object directly without copying it.
原型对象以重新给定名字(或引用)的方式被确实的复制了。
The prototype object is copied exactly, but given a different name (or reference).
一个解决方案是让一个防御性复制你的对象，然后通过你的方法的引用。
One solution is to make a defensive copy of your object, and then pass its reference to your method.
复制本地：指定是否自动将引用复制到目标目录。
Copy Local: Specifies whether to automatically copy the Reference to the target directory.
复制本地：指定是否自动将引用复制到目标目录。
Copy Local: Specifies whether to automatically copy the Reference to the target directory.
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