He bursts into a loud guffaw.
他突然大笑起来。
As they guffawed loudly, the ticket collector arrived...
他们正哈哈大笑的时候，检票员到了。
You 're in the soup frankly because of course your teacher is just kind of slapping his knee and guffawing while reading it .
然后你就囧了，说实话，你的老师读到这样的错误时会拍腿大笑，边读边狂笑。
guffawingguffawingguffawing