"开朗"这个词的英文等价词是"outgoing"。
"Outgoing"来自英文动词"go out"，意思是外出、离开、社交。因此"outgoing"这个形容词指的是喜欢外出和社交的人。
例句：
She is very outgoing and always makes new friends easily. (她非常开朗，总是很容易交新朋友。)
He is an outgoing person and enjoys going to parties. (他是个开朗的人，喜欢参加聚会。)
She is outgoing and loves to travel. (她很开朗，喜欢旅行。)