The rank-and-file members of the Green Movement, they have reached the unfortunate conclusion that now that the regime cannot be reformed in a peaceful way, we have to pursue other means.

VOA: standard.2010.06.11

If the vehicle in the unfortunate circumstances of a collision, has to be able to maintain the security of the hydrogen which means more mass, which means a lot of the efficiency is being squandered What's the environmental impact of hydrogen production?

如果车辆,在碰撞中发生了不幸，要仍然能够保持氢气的安全性的话,意味着需要更多的质量，也就是说大部分效率被浪费了,制氢对环境有什么影响呢？

麻省理工公开课 - 固态化学导论课程节选

So this is a game that occurs in soccer and just to give an idea of how important it is for those people who are unfortunate enough not to be soccer fans here, the last World Cup was decided on penalty kicks.

所以这是一个有关足球的博弈,我先告诉在座的不是球迷的同学,为什么说这个很重要,因为上届世界杯冠军就是点球决定的

耶鲁公开课 - 博弈论课程节选