The winner will face a tough challenge in the general election against long-time liberal Democratic Senator Barbara Boxer.

VOA: standard.2010.06.08

His challenge to the poets is in a way the basis for the resentment that is built up against him in that Aristophanes and what he calls the earlier accusers have brought to bear.

他对诗人的挑战，某个层面来说,是对反对他的人所产生之愤恨的基础,这是亚里斯多芬尼斯及他所谓的,前代原告施加于他的。

耶鲁公开课 - 政治哲学导论课程节选

It is a long-term endeavor and we both are united to fight against this endeavor, which is challenging our way of life and wants to challenge the way of life with the world."

VOA: standard.2009.05.13