当大家由于某件事情感到既开心又紧张的时候就能说 butterflies in their stomach1.
例句
My interview2 starts in ten minutes. Ive got3 butterflies in my stomach!
Julie has butterflies in her stomach every time Mike speaks to her.
I always get the butterflies before big speeches4.
请注意
假如一个人特别外向喜欢社交那样就能称这个觉得 social5 butterfly.
Alan goes out every night and loves meeting6 new people. Hes such7 a social butterfly.