champ at the bit
焦虑不安、渴望迫不及待地想要做某事
口语·表示急切或迫不及待
英文释义
to be impatient or eager to start or do something
例句
The kids were champing at the bit to open their Christmas presents.
典故来源
源自马术，马匹在等待出发时会咬嚼子（bit），比喻人急切等待或渴望行动。