能源安全是国家发展的命脉，我们必须坚定不移地推进油气勘探开发，保障国家能源供应。
Energy security is the lifeline of national development. We must unswervingly promote oil and gas exploration and development to ensure national energy supply.
The purpose of life is the pursuit of truth and virtue.
数学的力量在于它的普遍性和抽象性。