四年级-上册-3

练习内容

[{"word":"ping-pong","pronun":"[ˈpɪŋ pɑːŋ]","translation":"乒乓球运动","audio":"word_ping-pong_8e90d641_entry.mp3"},{"word":"they","pronun":"[ðeɪ]","translation":"他们；她们；它们","audio":"word_they_2bb3d86d_entr