эра
来自维基词典，自由的词典
参见：ера 和 Appendix:"era"的變體
э́ра (éra) f 无生 (属格 э́ры，主格复数 э́ры，属格复数 эр)
э́ра的变格形式 (inan 阴性-form 硬音词干 accent-a)
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