inquiry with letter的用法和樣例：
例句
- As an important channel of polities participation, the letter petition system safeguards people's democratic rights.
摘要信訪是我國公民政治參與的重要渠道，是實現和維護人民群眾民主政治權利的具體形式。 - We should do a good job with letters and visits from the people and intensify oversight by the media and the general public.
做好信訪工作，加強輿論監督和社會監督。
