德语基础语音-基础语音第二课/元音[aː], [a], [oː], [ɔ]和辅音[g], [k], [b], [p]

本课我们将学习元音音素[aː], [a], [oː], [ɔ]和辅音音素[g], [k], [b], [p]的发音,学习德语问候语。
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