translation.en: Now, to understand laughter, you have to look at a part of the body that psychologists and neuroscientists don't normally spend much time looking at, which is the ribcage, and it doesn't seem terribly exciting, but actually you're all using your ribcage all the time.
translation.zh: 那么，为了理解「笑」， 你必须重新认识 心理学家和神经学家通常 不会花太多时间去关注的部位 那就是胸廓。 它看起来不是很厉害， 但实际上，你每时每刻都在使用你的胸廓。