Definition
To begin a new activity or job with immediate energy and effectiveness.
雷厲風行
The new manager hit the ground running, leading the team ahead of schedule immediately upon starting.
新經理一上任就立即帶領團隊超前進度。
After months of preparation, the new product hit the ground running upon its release and became very popular.
經過數月的準備，新產品一推出就大受歡迎。
She is very good at adapting to new environments; she hits the ground running every time she changes jobs.
她非常擅長適應新環境；每次換工作都能立即上手。