打开App
360P
徐老师讲英语，自然拼读a字母在开音节的发音
音标和自然拼读6/19
App03:39
App04:29
App01:55
App02:49
App04:10
App02:58
App04:31
App02:47
App03:22
App05:47
App05:20
App02:41
App01:18
App03:01
App04:00
App03:17
App03:11
App03:06
App09:57打开App观看
App03:39App04:29App01:55App02:49App04:10App02:58App04:31App02:47App03:22App05:47App05:20App02:41App01:18App03:01App04:00App03:17App03:11App03:06App09:57
