英語knowledge可數嗎

　　He had an encyclopedic knowledge of drugs.

　　他有淵博的藥品知識。

　　I was amazed at the extent of his knowledge.

　　他知識之淵博令我驚奇。

　　The boy's knowledge was out of the ordinary.

　　這個男孩的知識面非同尋常。

　　It is beyond the confines of human knowledge.

　　這超出了人類的知識范圍。

　　He had only a rudimentary knowledge of French.

　　他只有最基本的法語知識。