under your breath
低聲說、私下嘀咕
口語·表達低聲抱怨或嘀咕
英文釋義
to say something quietly or in a hushed tone, often out of anger or frustration, so that others may not hear
例句
He muttered an insult under his breath so no one else could hear.
典故來源
字面意為在呼吸之下，指聲音極低，幾乎被呼吸聲掩蓋。