除第一次外，所有内容均应自上而下构建。
The power elite are not solitary rulers. Advisors and consultants, spokesmen and opinion-makers, are often the captains of their higher thought and decision.
数学证明的美在于它的简洁性和必然性。
The most profound impact of computer science is its ability to democratize information and empower individuals.
Innovation in database systems is not just about speed, but also about adaptability and scalability.
