worth a principle of core的用法和樣例：
例句
- Equity is the core value of a harmonious society.
和諧社會的核心價值理念是公平與公正。 - The new moralities and spiritual elements formed in the course of the youth's voluntary service are enriching the idea on value included in the socialist core value system.
青年志願服務發展過程中形成的新的道德和精神因素，豐富著社會主義核心價值體系中的價值理念。
