Definition
When a particular trait is taken away from someone, it is due to circumstances that prevent the trait from being maintained.
因为某种情况而失去某种特质
Under pressure, the artist's creativity was knocked out of him.
在压力下，艺术家的创造力被击垮了。
The hardships of life knocked the passion out of him, completely changing who he was.
生活的艰辛击垮了他的热情，彻底改变了他。
The failure knocked her confidence out of her, making her more cautious.
失败击垮了她的自信心，使她变得更加谨慎。