adj.荒谬的，荒唐的，极不合情理的，怪诞的，离奇古怪的

The claim that the moon is made of cheese is nothing short of preposterous.
这种声称月球由奶酪制成的说法荒谬至极。
His explanation for how he managed to finish two projects in one day was preposterous.
他解释如何一天完成两个项目的理由简直是无稽之谈。
The movie's plot twists were so preposterous that it became laughable.
电影中的情节转折荒诞到让人觉得可笑。
The company's claim of having invented time travel is nothing but a preposterous exaggeration.
公司声称发明了时间旅行纯粹是夸大其词，荒谬无比。
Her belief that aliens built the pyramids is utterly preposterous.
她认为外星人建造金字塔的想法极为荒谬。
The idea that a three-year-old could solve a complex math problem is preposterous.
认为三岁的孩子能解答复杂的数学题是荒谬的。
The government's justification for invading a neighboring country was a preposterous display of arrogance.
政府入侵邻国的借口荒诞得令人难以置信。
The witness's testimony contradicted every piece of evidence, making it an incredibly preposterous account.
证人的证词与所有证据相悖，简直荒唐透顶。
The child's belief that they can fly by flapping their arms is patently preposterous.
孩子相信挥动双臂就能飞起来的想法显然荒谬。
The professor's theory about the origin of life on Mars was dismissed as preposterous by the scientific community.
科学界对这位教授关于火星生命起源的理论嗤之以鼻，认为它荒谬无比。