【解释】头上顶着盆子看天。比喻行为和目的相反，愿望不可能达到。
【出处】汉·司马迁《报任少卿书》：“仆以为戴盆何以望天，故绝宾客之知，亡家室之业，日夜思竭其不肖之才力，务一心营职，以求亲媚于主上。”
【语法】紧缩式；作谓语；比喻行为和目的相反，愿望难实现
◎ 戴盆望天 dàipén-wàngtiān
[work blindly;try to discover the mystery of the sky by covering the head with a tub] 头戴盆子而想看天上。比喻行动跟目的相反,愿望无法实现(语出司马迁《报任安书》)
戴盆望天,不见星辰。——《易林·小过之蛊》
-----------------国语辞典头上戴著盆子，想看天而看不成。比喻行动与目的相违背，则愿望绝不能达到。《后汉书．卷四一．第五伦传》：「苦身待士，不如为国。戴盆望天，事不两施。」《文选．司马迁．报任少卿书》：「仆以为戴盆何以望天，故绝宾客之知，亡室家之业，日夜思竭其不肖之才力。」
英语 lit. viewing the sky with a basin on one's head; it is hard to get a clear view of the sky while carrying a platter on one's head, fig. it is hard to get on in one's career while encumbered by family obligations, one can't perform a major task while bothered by other duties