五年级下-6

练习内容

[{"word":"fifth","pronun":"[fɪfθ]","translation":"num. 第五\nn. 第五；五分之一\nadj. 第五的；五分之一的","audio":"fifth.mp3"},{"word":"twelfth","pronun":"[twelfθ]","translation":"n. 第十二；月的第十二日\nadj. 第十二的，第十二个的；十二分之一的",