To conclude, I would like to underline one more time how crucial the setting up of a library would be for our college.

conclude 是动词，意思是"总结、得出结论"。这个词由前缀 con-（表示"共同、完全"）和词根 clude（来自拉丁语 claudere，意为"关闭"）组成，字面意思是"完全关闭"，引申为"结束讨论并得出结论"。