很可能某个团队修改了某个函数的名字或签名，而另一个团队正在加入新的文件使用了同一个函数。
It is quite possible that one team will change a function's name or signature while another team is adding a new file using same-said function.
为了让应用能避免此类攻击或模糊点，应用的设计者或开发者们应该在待签名的应用数据中加入目标接收方的身份。
In order to protect applications from this kind of attack or ambiguity, application designers or developers should add the identity of the intended recipient to application data to be signed.
在这个例子中，增加的注释加入了另一维，从而成为三维签名空间。
In this instance, the addition of annotation adds another dimension, resulting in a three-dimensional signature space.
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