原材料引用(Materials)
CPR keeps blood and oxygen flowing to the heart and brain.
信息与事实(Facts)
[u] 双唇收圆,向外突出,短元音
[əu] 双原因,先发[ə],再发[u] 收嘴唇
感受与评价(Comments)
感觉腹部在和喉咙同时用力,嗓子好累,尤其是[ə]
累计练习小时数(Hours)
0.5h
CPR keeps blood and oxygen flowing to the heart and brain.
[u] 双唇收圆,向外突出,短元音
[əu] 双原因,先发[ə],再发[u] 收嘴唇
感觉腹部在和喉咙同时用力,嗓子好累,尤其是[ə]
0.5h