数学的本质不仅在于解决问题，还在于提出正确的问题。
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.
一二三产业融合是现代农业的关键。
In every society, there are voices that are silenced; literature gives them a chance to speak.
The only thing that can make you a hero is your courage.