消灭：指完全消除或灭绝某物或某群体。
淘汰：指通过某种方式将某物或某群体逐渐减少或排除。
kill off // [ killing killed kills ]
→seekill
动词词组 If you say that a group or an amount of something has been killed off, you mean that all of them or all of it have been killed or destroyed. 杀光; 把…灭绝
Their natural predators have been killed off.
他们的天敌已被灭绝。
It is an effective treatment for the bacteria and does kill it off.
这是一种有效的灭菌方法，确实把细菌都杀光了。
kill en masse; kill on a large scale; kill many
同义词： exterminate
... kill wantonly胡乱地杀死 kill off完全除掉,使全死掉,使完全失去 kill off all one's political opponents把政敌全部除掉 ...
... kill off 被全部杀死；被灭绝； 2. be far from 根本不；远远不； 3. turn out 结果发现；结果是； ...
Some drugs kill off useful bacteria in the user's body.
某些药物会杀死服用者体内的有益细菌。
The prophets of doom who said television would kill off the book were wrong.
认为电视会扼杀书籍的悲观预言家完全错了。
In Brazil, cattle ranchers used to nearly kill off jaguars because they would kill their cows.
在巴西，牧场主人以前几乎把美洲虎都杀光了，因为它们会杀害他们的牛群。
The researchers say their findings support the idea that a huge explosion or explosions caused fire and pressure powerful enough to kill off life on the Earth.
VOA : special.2009.01.20
"Our anticipation is that it will be another seven to ten days to complete all of the preparations that we need to exercise this option and then at that point, we'll pump the kill mud and hopefully have this well killed, and well shut off, and the flow shut off."
VOA : standard.2010.05.17
So if you're curious this one I'm gonna kill off - because it will take a little while-- you'll find that available on the cloud if you'd like to experiment whether or not you're doing that edition or the other.
由于时间关系，我就现将其关闭,如果大家觉得好奇-,可以自己尝试一下,不管你是否选择将这个版本作为,实验内容。
计算机科学课程节选 : 哈佛公开课
More importantly, security is absolutely critical if Pagenonce really wants to kill off the checkbook.
FORBES: Pageonce: An App That Wants to Kill Off The Checkbook
Nonetheless, the programme's collapse might kill off hopes of changing of Turkish society more profoundly.
But it also seems unlikely that regulators want to kill off the entire for-profit education industry.