1. 开篇点题：In this letter, I would like to express my thoughts on the topic of...
2. 简述背景：The background of this issue is that...
3. 阐述观点：From my perspective, it is crucial to...
4. 举例说明：For instance, the following examples can illustrate this point...
5. 提出建议：I suggest that...
6. 总结观点：In conclusion, it is essential to...
7. 呼吁行动：Let us all take action to...
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