1) To be earnest in public duties

热诚奉公
2) Write a reply specially

专诚奉复
6) To save money for public welfare by Being parsimonious in one's personal spending

啬己奉公
补充资料:热诚
热烈诚恳:对你们的热诚十分感谢|报以热诚。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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