(NO TRANSCRIPTS) In 2008,Kennedy saw an agent of change in Senator Barack Obama and became one of the first prominent Democrats to endorse Obama's bid for the party's nomination for president.

VOA: standard.2009.08.26

Moreover, this self is the agent responsible for the thoughts and actions of an individual to which they are ascribed.

另外，这个self还是对一个个体的,行为和思想负责的代理,这是个实物因此要经受时间。

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