primary need的用法和樣例：
例句
- Contact with other people is a basic human need.
和他人接觸是人的基本需要。 - The need of ethics is endogenetic and essential need of enterprise, the core of enterprise culture and the source of enterprise centripetal force.
倫理需要是企業(yè)內生的基本需要，是企業(yè)文化的核心和企業(yè)凝聚力的來(lái)源。
