n.疯子，行为极其危险(或狂暴、愚蠢)的人，狂人，狂热分子，过激分子，躁狂症患者
adj.疯狂的，发狂的，狂热的

原形：maniac复数：maniacs

The maniac laughed manically as he continued his reckless driving.
疯子一边疯狂地大笑，一边继续他的鲁莽驾驶。
The serial killer was portrayed in the movie as a deranged maniac.
电影中的连环杀手被描绘成一个精神错乱的疯子。
She went on a cleaning spree, like a maniac trying to erase every speck of dust.
她像疯了一样进行大扫除，试图清除每一粒灰尘。
The tennis player's relentless energy on the court earned him the nickname "The Maniac.
那位网球选手在场上不知疲倦的能量为他赢得了“狂人”的绰号。
The maniacal dictator ruled with an iron fist, instilling fear in his people.
那个疯子般的独裁者以铁腕统治，使人民生活在恐惧之中。
He worked out at the gym as if possessed by a maniacal drive for fitness.
他在健身房锻炼时，仿佛被一种对健身的疯狂驱动力所控制。
The children screamed in delight, running around the playground like little maniacs.
孩子们高兴地尖叫着，在操场上跑来跑去，像一群小疯子。
The maniacal laughter echoed through the abandoned house, sending chills down our spines.
疯狂的笑声在废弃的房子里回荡，使我们不寒而栗。
Her obsession with cleanliness bordered on mania; everything had to be spotless.
她对清洁的痴迷近乎狂热，一切都必须一尘不染。
The maniacal scientist's experiments pushed the boundaries of ethics and reason.
那位疯狂科学家的实验挑战了伦理和理智的界限。