butterfly蝴蝶

Have butterflies in one's stomach 心裡七上八下(意指當你的胃裡有蝴蝶飛著時的心境)

Even though l had practiced speech many times, I still had butterflies in my stomach when it was times to go on stage.
雖然我練習好幾遍演講，但是要到上台的時候，我的心裡還是七上八下。