短語詞組短語conservation of energy principle 能量守恒原理cost of service principle 勞務(wù)成本原則system of teaching principle 教學(xué)原則體系Conditions of Legal Principle 法理要件Of Education Principle 教育理念verifying of cashier principle 出納原則稽核freedom of contract principle 合同自由原則application of drawer principle 抽屜原理的應(yīng)用equality of arms principle 平等手段原則 返回 of principle