cool as a cucumber
非常冷靜和自信
口語·形容非常冷靜沉著
英文釋義
Calm and composed, especially in stressful situations
例句
Even during the crisis, she remained cool as a cucumber.
典故來源
源自18世紀英國,黃瓜內部溫度比環境低,比喻人在壓力下保持冷靜。