例句：

　　A measure of technical knowledge is desirable in this job.

　　做這項(xiàng)工作最好多懂一些技術(shù)知識(shí)。

　　He has a wide knowledge of painting and music.

　　他在繪畫和音樂方面知識(shí)淵博。

　　There is a lack of knowledge about the tax system.

　　大家對(duì)稅制缺乏了解。

　　For years we had little knowledge of what life was like inside China.

　　以往很多年我們對(duì)于中國國內(nèi)的生活情況所知甚少。

　　He never made a will, to the best of my knowledge.

　　據(jù)我所知，他從未立過遺囑。