是发这个音吗 [ɔ:],如果不是再追问我
au [ɔ:]cause,caught,autumn
aw [ɔ:] dawn,lawyer,draw,saw,law
oa [ɔ:] board,broadcast,abroad
oar[ɔ:] board roar
oor[ɔ:] floor door
our[ɔ:] course,fourth,your
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