[译] 太空探险是增加知识、了解宇宙的手段。
[误] Space exploration is a means of increasing the knowledges and understanding the universe.

[正] Space exploration is a means of increasing the knowledge and understanding the universe.
[注] 名词 knowledge 只用单数，如果说“许多（知识）”则用 much 或 good 来修饰，如：He has a good knowledge of mathematics. 他有丰富的数学知识。