1 to damage sth so badly that it can no longer be used or no longer exists 摧毁;毁坏;破坏:
The building was destroyed by fire.这座建筑物被大火焚毁了。The defeat destroyed his confidence.这次失败毁掉了他的信心。
2 to kill an animal, especially because it is injured or dangerous 杀死(尤指受伤或危险的动物):
The horse broke its leg and had to be destroyed.那匹马弄断了腿,必须杀死。