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.
我不是为了钱或名声而打球,我打球是因为我爱网球。
扬撒糠屑迷了眼,也会让天地四方都变了位置;蚊虫叮咬皮肤,也会让人通宵都不能安眠。
自由民主在世界范围内的传播并非不可避免,但它是现代化进程中最可能的结果。
The mind evolves to meet the demands of existence.