Who should be held accountable for anti-terrorism 's dirtiest business ?

谁该为反恐活动中最肮脏的交易负责？

It is one of the dirtiest election campaigns I can remember .

这是一场我记忆中少有的肮脏的竞选活动。

Did you know that london isthe dirtiest city in europe ?

你知不知道伦敦是全欧最脏的城市?

Europe already has an emissions-trading system ( ets ) for its five dirtiest industries .

针对五类污染最严重的产业，欧洲制定了排放交易方案（ets）。

So that 20-30 % cut still leaves it among the dirtiest plants around .

因此，即使削减20-30%，它仍将归为最肮脏电厂之列。