kill off 1. 灭绝；杀光 The factory dumped poisonous wastes into the river and killed off the fish. 工厂把有毒的废料倒入河中，把鱼都杀死了。 2. 破坏(计划等) Many Congressmen voted against the new law and they killed it off. 许多议员投票反对这新法令，把它彻底否决了。 3. 使(热情等)完全消失 kill off sb.'s interest 使某人兴味索然 4. (作家)让(笔下人物)死去 5. 〈美口〉消磨 kill off a few leisure hours in the park 在公园里消磨掉几小时的空闲时间