in action
01
大显身手时, 展示本领时
(of a person) doing something one is trained for or is very good at
idiom
例子
Despite being exhausted from the long hours, the medical team stayed in action and worked tirelessly to save the lives of those injured in the accident.
你真该看看那位厨师大显身手。
02
实际运行中, 实际使用时
(of a thing) serving its purpose or operating in a way that it is designed or programmed
idiom
例子
The new engine was in action during the race and provided the driver with the power they needed to win.
新的安保系统在实际运行中令人印象深刻。
