chomp at the bit
US /tʃɑmp æt ðə bɪt/
UK /tʃɑmp æt ðə bɪt/

1.
迫不及待, 躍躍欲試
to be eager or impatient to do something
:
•
The students were chomping at the bit to start their summer vacation.
學生們迫不及待地想開始他們的暑假。
•
After months of training, the athletes were chomping at the bit to compete.
經過數月的訓練,運動員們迫不及待地想參加比賽。