相关单词同义词prolonged, lingering, stretched, 近义词 continuous 连续的, prolonged 持续很久的, extended 长期的, lengthy 冗长的, long-drawn-out 持续很久的, lingering 拖延的, expanded 展开的, lengthened 动词lengthen的过..., delayed 延时的, drawn-out 延长的临近词protract, protracted battle, protractor biopsy, protractor screen, protracted course, protracted flight, protract a debate, protracted illness, protracted warfare, protracted symptom, protracted diarrhea相似词protoplasm, prototype, prototypical, protozoan, protractor, protrude, protrusion, protuberance, 返回 protracted