并列题名：Principle of politics 并列题名：Principles of optics 并列题名：Principle of statistics 并列题名：Principle of economics 并列题名：Principles of genetics Principle of politics 并列题名：Principles of pragmatics 并列题名：Principles of statistics 并列题名：Principles of nano-optics 并列题名：Principle of planning