They had to write their ID Numbers, pick a language, and click their way through the computerised test: a, b, or C. True or False. Yes or No.
他们需要填写自己的证件号码，选择一种语言，在整个电脑考试中不停地点击：A、B或C，对还是错，是或不是。
This irreflexivity can be used to set up an equivalence relation—that is, for Key s a and b , if comp(a, b) is false and comp(b, a) is false , then a and b must be equivalent.
这个反自反性质可以用来建立一个等价关系(equivalence relation)—也就是，对于Keys a和b来说，如果comp(a,b)为false并且comp(b,a)也为false，那么我们就说a和b是等价的。
B. destroyed the Horcrux locket when he took it and then replaced it with the false locket and note. So what are they or what aren't they?
只把赝品和纸条放在原处，他并没有摧毁真的寄魂居。那么它们是什么，或者不是什么呢？
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