五年级上-1

练习内容

[{"word":"old","pronun":"[oʊld]","translation":"adj. 陈旧的，古老的；年老的\nn. 古时","audio":"old.mp3"},{"word":"young","pronun":"[jʌŋ]","translation":"n. 年轻人；（动物的）崽，仔\nadj. 年轻的；初期的；没有经验的","audio":"young.mp3"},{"