wiser是指“聰明的人”，never the wiser永遠(yuǎn)也不是明白人，即“依舊不懂，一竅不通，仍然一無(wú)所知”。
【例句】
Tony proposed on their own timetable-on Valentine's Day-and her mother was never the wiser.
托尼按照他們自己的計(jì)劃在情人節(jié)這天向她求婚了，而希瑟的媽媽仍然對(duì)女兒造假一無(wú)所知。
For all my advice she was never the wiser.
雖然我全力指點(diǎn)，她還是一竅不通。