Some people use the Internet to kill time while others use it for self-improvement.

有些人使用互联网来消磨时间，而有些人则用它来进行自我提升。

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Botanists have discovered for the first time that the plants are carnivorous predators who kill insects in order to "self-fertilise" themselves.

植物学家首次发现，这种植物是食肉性捕食者，它们捕杀昆虫是为了“给自己补充营养”。

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Nothing can kill our self-esteem more than setting unrealistic expectations.

没有什么比不切实际的期望更能让人自信心受挫了。

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Chicago Mayor Richard Daley said guns in the home - even for self-defense - kill innocent people.

VOA: standard.2010.06.29

Law-abiding citizens acting in self-defense actually shoot and kill many more criminals each year than police do, and with a much lower percentage of incidents where an innocent person is mistakenly identified as a criminal.

FORBES: Who Is The Gun Lobby? Me For Sure; Maybe You Too?

"Everyone feels like they have to walk on egg shells, " says Stage, who once tried to kill herself with self-inflicted cuts.

NPR: Suicide Survivors Help To Shape Prevention Efforts

Now you have to allow the police eventually, if they think somebody's going to kill them or try to kill them, to be able to act with all the expertise they have in self-defence and they're trained not to kill somebody but to disarm them and disable them, perfectly proper.

BBC: News | BREAKFAST WITH FROST | Liberal Democrat Home Affairs spokesman Simon Hughes