knowledge可数还是不可数

knowledge不可数。

knowledgen.知识、学问、学识、知晓、知悉、了解

knowledgable有学问；知识广博

She has acquired a good knowledge of English.

她英语已经学得很好。

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

近年来我们对这种疾病的了解深入多了。

To my certain knowledge he was somewhere else at the time.

我敢肯定他当时在别处。

She was impatient in the knowledge that time was limited.

她知道时间有限，所以很着急。