我说你们接受我的宣称，也就是真值，你们接受我关于有效性的宣称。
So I claim you accept my claim about the truth values and you accept my claim about validity.
我指出这一点是，重要的是可能性，而不是现实性，可能真值重要，实际真值不重要。
What I am trying to point is that what matters is the possibility not the actuality, its the possible truth values not the actual truth values that matter.
具有反射性：对于任何非空的参考值x, x.e quals (x)应该返回真值。
It is reflexive: for any non-null reference value x, x.equals (x) should return true.
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