like a shot
US /laɪk ə ʃɑt/
UK /laɪk ə ʃɑt/

1.
立刻, 马上, 飞快地
very quickly or immediately
:
•
When I told him about the free tickets, he was there like a shot.
当我告诉他有免费票时,他立刻就来了。
•
She ran out of the house like a shot when she heard the alarm.
她听到警报后,立刻冲出了房子。