1. the social force that binds you to the courses of action demanded by that force- John D.Rockefeller Jr

2. the proper sphere or extent of your activities

3. a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct

They frankly admitted their responsibility.

他们坦率地承认了责任。

That's too much responsibility for a child.

对于一个孩子来说，这责任是太重了。

He accepts full responsibility for what happened.

他承认对所发生的事负完全责任。