原材料引用(Materials) CPR combines breathing into the victim's mouth and repe...
原材料引用(Materials) The American Heart Association says about ninety-five p...
原材料引用(Materials) Doctor Ewy thinks the CPR guidelines should be changed ...
原材料引用(Materials) CPR keeps blood and oxygen flowing to the heart and bra...
原材料引用(Materials Cardio-Pulmonary Resuscitation or CPR can save the life ...
原材料引用(Materials) 文本(上)查音标,翻译 Twenty-two['twenti'tu] percent[pɚ'sɛnt] sur...
• 原材料引用(Materials) 文本(上)查音标,翻译 This[ðɪs] is[ɪz] the[ðə; ði] VOA Special[...
原材料引用(Materials) 原文略 信息和事实(Facts) 感受与评价(Comments) 全文跟读,要特别注意升降调,断句的位置 自己...
原材料引用(Materials) 原文略 信息和事实(Facts) 难句:Gordon Ewy is a heart doctor at the...