Campaign staffers for President Karzai say a second-round election is unavoidable and the only constitutional means to establisha new government.

VOA: standard.2009.10.25

In fact, a lot of ritual impurity is unavoidable and sometimes even obligatory, right?

事实上，很多仪式的不洁是无法避免的,有些时候甚至是必须的，不是么？

耶鲁公开课 - 旧约导论课程节选