假定你是李華，你校英文報正在為2023年6月5日的世界環境日征集環保口號。請你給口號征集負責人Alex寫一封信，介紹自己的口號，內容包括：
（1）口號的具體內容：
（2）口號內涵；
（3）對口號入選的期待。
參考詞匯：口號 slogan
注意：
（4）寫作詞數應為80左右；
（5）請按如下格式在答題卡的相應位置作答。
Dear Alex，
                        
Yours
Li Hua

【考點】提綱作文；書信類．

【答案】Dear Alex，
I'm Li Hua.Learning that slogans for the World Environment Day 2023 are in great need，I'm writing to introduce my version-Our Earth，Our Responsibility.
It is born out of the understanding that we are one people and we have only one Earth.So most importantly，we should safeguard the diversity of life on Earth，its ecosystems and its limited resources.And it is the unity of people all over the world that matters most in protecting our earth.
I hope my slogan can call on more people to shoulder their responsibility and meet with your favorable reply.
Yours
Li Hua