The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.

The way to get started is to quit talking and begin doing.

激情的持续时间与女人最初的抗拒成正比。

作物的多样性和思想的多样性同样重要；两者都是韧性的关键。