a working knowledge of

a working knowledge of a knowledge knowledge 不可数 ,为啥a good knowledge? what knowledge还是what a knowledge have a knowledge knowledge a wide range of knowledge =a wide knowledge吗 a powerhouse of knowledge是什么意思? 请问the knowledge 和 a knowledge 有什么区别 Keep working,working 8 days a week! 英语翻译一、MA International Broadcast JournalisamThis course is for international students who want to gain an in-depth understanding and a working knowledge of Broadcast Journalism.It offers students with a proven interest in news the chance working in a working with a A little knowledge is a dangerous thing. english is a ________ to knowledge The book is a b_____ of knowledge. cover a wide range of knowledge He has a wide knowledge of history