Debt collection letters -- an overview " debt collection letter " in the singular may be an oxymoron , since unfortunately , one is rarely enough .
追债信件-概览"追债信",在奇异可能是一个自相矛盾的,因为不幸的是,人们很少不够的。
So that first english citation defining oxymoron as " subtly foolish " is a literal translation , oxymoron really does mean sharp and stupid at the same time .