The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.
世界不是辩证的——它誓死走向极端,而不是平衡,誓死走向激进的对抗,而不是和解或综合。
出自汉·桓宽《盐铁论·力耕》。穿衣吃饭是人民生活的根本所在,不可以不慎重的对待。
On bended knee I'm begging you please