一窍不通

一窍不通是一个汉语成语，窍:洞，指心窍。没有一窍是贯通的。比喻一点儿也不懂。出自《吕氏春秋·过理》。【英文翻译】1. to know nothing about; to lack the slightest knowledge of; to be utterly ignorant of; to be utterly stupid; not to know one s arse from one s elbow; not to know chalk from cheese