公: Ⅰ形容词1.(属于国家或集体的) state-owned; collective; public 短语和例子公物 public possessions; 公关 public relations2.(共同的;大家承认的) common; general 短语和例子公分母 common denominator; 公约 convention; pact3.(属于国际间的) int
提高效率: increase efficiencyincrease of efficiencyspeedupto improve efficiency
