“煞费苦心”常见的英文表达有 “go to great pains” 或 “take great pains” ，这两个短语都表示为了达成某事付出了极大的努力、花费了很多心思。
例句：
He went to great pains to prepare for the presentation, ensuring every detail was perfect.（他为准备这次演示煞费苦心，确保每个细节都完美无缺。 ）
She took great pains to decorate her new house, making it both cozy and stylish.（她煞费苦心地装饰新房子，让它既温馨又时尚。 ）