butterflies in stomach
緊張、緊張或不安的感覺，尤其是在緊張或激動的情況下。
口語·表示緊張或興奮
英文釋義
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.
典故來源
源自生理反應(yīng)，緊張時胃部肌肉收縮，感覺像有蝴蝶在飛，形容焦慮或激動的心情。