knowledge不可数。knowledge，英文单词，不可数名词，作名词时意为“知识，学问，知道，认识，学科，人名，(南非)诺利奇”。
acquire knowledge 获取知识
gain knowledge 获得知识
have knowledge 具备知识
lack knowledge 缺乏知识
require knowledge 需要知识
test your knowledge 考查你的知识
use your knowledge 利用你的知识
We do not have His Knowledge and Understanding!
我们没有他的知识和理解！
They do it without the knowledge or help of their parents.
这样做既不让父母知道也不要父母的帮助。
"We have the knowledge to answer many of these questions", he said.
“我们拥有知识对这些问题中的许多作出解答，”他说。
钟玉婷是好孩纸
