first-born (adj., n.)是什么意思，first-born (adj., n.)的翻译，first-born (adj., n.)音标、读音、用法和例句

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first-born (adj., n.)是什么意思，first-born (adj., n.)的翻译，first-born (adj., n.)音标、读音、用法和例句_果味酸柯林斯词典