knowledge是不可数名词。knowledge通常用作名词，有学问;了解;知识;认识;知道的意思。
扩展资料
例句：
1、A measure of technical knowledge is desirable in this job.
做这项工作最好多懂一些技术知识。
2、 He has a wide knowledge of painting and music.
他在绘画和音乐方面知识渊博。
3、For years we had little knowledge of what life was like inside China.
以往很多年我们对于中国国内的生活情况所知甚少。
4、He never made a will, to the best of my knowledge.
据我所知，他从未立过遗嘱。
