in a way that shows that you have good judgment and the ability to act correctly and make decisions on your own

When he saw the crash, the young boy acted very responsibly and called the police. 当他看到坠机时，这个小男孩表现得非常负责任，并报了警。

He tried to manage his land responsibly, with an emphasis on conservation. 他试图负责任地管理自己的土地，强调保护环境。