Definition
In the process of undergoing a surgical operation.
手術中
She felt very nervous before going under the knife.
她在接受手術前感到非常緊張。
He's been under the knife a few times, so he's no stranger to the process.
他已經接受過幾次手術，所以他對這個過程並不陌生。
The doctor informed the patient that he would be going under the knife soon.
醫生通知病人他很快就會接受手術。