Yuh Huh! ever heard of people talk about having butterflies in their stomachs?

呵呵！ 听说过人们谈论他们肚子里有蝴蝶吗？

Usually, when you have to give a presentation, people get nervous, and sometimes they get " butterflies in their stomach."

通常，当你必须做报告时， 人们会变得紧张，有时他们会“心烦意乱” 。