四年级-上册-6
课程：冀教版三年级起点 · 英文练习
词书: 冀教版三年级起点-四年级-上册 - 第6课
练习内容
[{"word":"building","pronun":"[ˈbɪldɪŋ]","translation":"建筑","audio":"word_building_1b20e902_entry.mp3"},{"word":"buy","pronun":"[baɪ]","translation":"买","audio":"word_buy_0461ebd2_entry.mp3"},{"word":