Without lifesavingmeasures, the brain starts to die within four to six m...

This is the VOASpecial English Health Report. Cardiopulmonaryresusc...

In all the cases, witnesses saw the event happen. w h l 这三个的音标不算...

Doctors in Tokyo led the research. It examined more than 4,000 people...

学习内容 /ʌ/ 和 /æ/ the study was published in the British M...

However,a new Japanese study questions the usefulness of mouth-to-mouth ...

学习内容 |p| |b| |s| |z| 这四个读音有前两个和后两个有相似之处。前两个都是爆破音，后两个发音相似...

学习内容 |ai| |au| |ei| 在学习这几个音标的过程中没有感到很困难，毕竟拆开来讲的话都是学过的音...

复习内容；学过的音标和句子。 复习的过程首先把录音听一遍，第...