元素若按其原子量排列,会呈现出性质的周期性。
Collaboration is key—no single entity can solve the world's challenges alone.
科学的进步就像古老的沙漠小径,散落着被抛弃的理论的苍白骨架,这些理论曾经看似拥有永恒的生命。
The human heart is a complex and often contradictory thing.
Patience and persistence are key to achieving long-term goals.
When basic needs are insecure, all idealism withers.