1. His dedication to charity work went beyond mere duty, it was an act of supererogation.
他对慈善工作的奉献不仅仅是履行职责,更是超出义务的行为。
2. Going above and beyond what was expected, she performed acts of supererogation to help those in need.
她超出预期,采取了超越义务的行动,帮助那些需要帮助的人。