K 開頭單詞

know yourself 認(rèn)識你自己 認(rèn)識你自己（歌曲名，Know Yourself）

know your grandparents [動力與電氣工程]了解你的祖父母

know you 認(rèn)識你 懂你

know without a doubt 確定明白

know what's what

know what 知道什么

know very well 熟知

know to your cost [航空、航天科學(xué)技術(shù)]由于付了代價才

know thyself 認(rèn)識你自己 了解你自己

know through and through 知根知底

know the score 了解情況；（尤指）了解問題的癥結(jié)。

know of 知道，了解…；聽說過…

know nothing at all 一無所知

know nothing about 一無所知

know nothing adj. 不可知論的 n. 一無所知的人

know no bounds 無限；不知限量

know more about 知道更多 了解更多

know more 了解更多

know little 知之甚少

know it all