POSTERIORI NECESSARY TRUTH 后天必然真理 x A sentence whose truth metaphysically hold in every possible world on the one hand, but cannot be epistemologically acquired without appealing to empirical inquiries on the other can be categorized"posteriori necessary truePOSTERIORI NECESSARY TRUTH 后天必然真理  A sentence whose truth metaphysically hold in every possible world on the one hand, but cannot be epistemologically acquired without appealing to empirical inquiries on the other can be categorized “posteriori necessary true