Marian Anderson's presence made it possible for other black singers to become opera singers in the United States.

VOA: special.2009.01.25

Traditionally, financial inventions were not granted patent rights, but now in the United States and in a number of other countries it has become possible to patent financial inventions.

传统的金融产品,是没有专利的,但现在,在美国,和其他的一些国家中,金融产品也拥有了专利

耶鲁公开课 - 金融市场课程节选

So on a personal level,I know it's possible to become happier.

个人层面上，是有可能变得更快乐。

哈佛公开课 - 幸福课课程节选