butterflies in stomach
紧张、紧张或不安的感觉，尤其是在紧张或激动的情况下。
口语·表示紧张或兴奋
英文释义
the nervous feeling or sensation in your stomach when you are anxious or excited
例句
Before his speech, he felt butterflies in his stomach and took a deep breath to calm down.
典故来源
源自生理反应，紧张时胃部肌肉收缩，感觉像有蝴蝶在飞，形容焦虑或激动的心情。