数学中最令人兴奋的时刻是当你发现两个看似不相关的领域有着深刻的联系。
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.
Energy security is the lifeline of national development. We must unswervingly promote oil and gas exploration and development to ensure national energy supply.
Innovation is not just about creating new products; it's about reimagining how we solve problems.