know的名詞怎麼寫

There is a lack of knowledge about the tax system.

大家對稅制缺乏瞭解。

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

以往很多年我們對於中國國內的`生活情況所知甚少。

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

據我所知，他從未立過遺囑。

She has acquired a good knowledge of English.

她英語已經學得很好。

Our knowledge of the disease has advanced considerably over recent years.

近年來我們對這種疾病的瞭解深入多了。