It's downright ridiculous that the library isn't open on Mondays!图书馆星期一不开门简直是荒谬透顶！It's a preposterous claim that the government is trying to poison its citizens.说政府要毒害市民，真是荒谬透顶。This patently absurd argument is often used by anti-gay groups.这个荒谬透顶的观点经常为反同性恋团体所用。