五年级-上册-9

练习内容

[{"word":"leaf","pronun":"[liːf]","translation":"树叶；叶子","audio":"word_leaf_bab4ff04_entry.mp3"},{"word":"lesson","pronun":"[ˈlesn]","translation":"课；一堂课","audio":"word_lesson_6220a030_entry.mp3"},{"wo