1，原材料引用(Materials) 今天练习的是 The American Heart Association says aboutninet...

今天练的比昨天满意。 听很重要。 1，原材料引用(Materials) 今天练习的是 Doctor Ewy thinks the CPR gui...

1，原材料引用(Materials) 今天练习的是 It said people should increase the number of c...

1，原材料引用(Materials) 今天练习的是 Twenty-two percent survived with good brainabi...

1，原材料引用(Materials) 今天练习的是 The researchers say any kind of CPR improved c...

1，原材料引用(Materials) 今天练习的是 Seven hundred and twelve received CPR. ˈsɛvən ...

1，原材料引用(Materials) 今天练习的是 Doctors in Tokyo led the research. dɑktərz ɪn ...

1，原材料引用(Materials) 今天练习的是 The study waspublished in the British medical ...