(1)知识，学问(learning)[U]：scientific/agricultural～科学/农业知识;～of zoology 动物学知识;the breadth of sb's～某人的知识面;all branches of～各门学问;A little～is a dangerous thing. 一知半解是危险的。〖同〗 learning，scholarship;〖反〗ignorance，illiteracy;

(2)懂得(有某种程度的了解)，见闻(information or what is known)[U，a～]：have a wide/good/poor～of history通晓/很熟悉/不了解历史;a～of human nature 对人性的了解;receive～得到消息;〖同〗communication，information，news;〖反〗inexperience;

(3)理解，认识(understanding) [U]：have no～of good and evil/life in a small village 没有对善与恶/小村庄生活的认识;sb's～of the universe 某人对宇宙的认识;〖同〗awareness，realization，consciousness，sense;〖反〗unawareness，unfamiliarity，misunderstanding;

be common/public knowledge 众所周知的事： This implied that the case was common～.这意味着此案件是人所共知的。

come to sb's knowledge (fml) 为某人所知： It has come to my～that you have not been working hard enough. 我已经知道你一直没有努力工作。

to one's knowledge 据某人所知： He has been there several times to my～.据我所知他已去过那里几次。

with/without sb's knowledge(不)让某人知道：She married without her parents'～. 她背着她父母结婚了。

→′knowledgeable adj 有见识的;′knowl-edgeably adv 有见识地