What's the meaning of the underlined word "responsibility" in Paragraph 4?

第四段中的划线单词 “responsibility” 是什么意思？

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As you can see, because each target has one responsibility, the code in Listing 4 is much easier to follow.

可以看到，由于每个目标只担负一种责任，清单4中的代码理解起来要容易得多。

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In test 4, we wanted to determine how much CPU time is freed from the application server if the name randomization functionality becomes the test machine's responsibility.

在测试4中，我们想要确定，如果名称随机化功能成为测试机的责任，那么不运行应用程序的CPU时间是多少。

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Campaign group Fathers 4 Justice claimed responsibility.

BBC: NEWS | UK | Politics | Man fined over PM flour-bombing

As peers continued their consideration of the Police Reform and Social Responsibility Bill at report stage on 4 July 2011, Baroness Henig, president of the Association of Police Authorities, said there were still "gaps in the landscape" of the legislation.

BBC: Police commissioners 'should play role in CSPs'

In a Commons motion they said coverage given to Fathers 4 Justice, which claimed responsibility for the attack, "rewarded" them for their actions.

BBC: NEWS | UK | Politics | Man fined over PM flour-bombing