这个培训项目提高了员工对环境保护问题的意识。

The training program increased sensitization to environmental protection issues among staff.

sensitization 是动词 sensitize 的名词形式，由形容词 sensitive（敏感的）加上后缀 -ize（使...化）构成动词，再加名词后缀 -ation 构成。sensitize 意思是"使敏感、使意识到"，sensitization 指"敏感化、意识提升"的过程或结果。