This campaign is designed to sensitise the public to environmental protection issues.

sensitise 是动词，由形容词 sensitive（敏感的）加上后缀 -ise（使...化）构成，意思是"使敏感、使意识到"。在美式英语中拼写为 sensitize。 sensitise the public 指通过宣传活动让公众对环境问题产生敏感和关注。