champ at the bit
焦慮不安、渴望迫不及待地想要做某事
口語·表示急切或迫不及待
英文釋義
to be impatient or eager to start or do something
例句
The kids were champing at the bit to open their Christmas presents.
典故來源
源自馬術，馬匹在等待出發時會咬嚼子（bit），比喻人急切等待或渴望行動。