战斗越艰难，胜利就越甜蜜。
The harder the battle, the sweeter the victory.
我们必须平衡经济增长与环境保护，以确保更美好的未来。
"The world is a book, and those who do not travel read only one page."
The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.
"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."
