MAGIC WORLD
Why do I hiccup?
人为什么会打嗝?
There is a muscle4 near your lungs (肺). The muscle helps you breathe (呼吸). When it vibrates (振动), it pushes air out with a pop. Hiccup! 21ST
- 对本期电子报订户、有效期内的VIP教师会员和本学期小学尊享卡用户,我们开放所有内容:
- 如果您拥有以上权限,请点这里登录;
- 订阅电子报,请点这里;
- 激活VIP教师卡,请点这里;
- 激活21英语尊享卡,请点这里。