用秤称一称，才能知道轻重；用尺量一量，才能知道长短。

形容自然景观的壮丽与难以用笔墨完全描绘。

In the realm of quantum materials, the concept of topology provides a powerful lens through which we can understand and predict new phases of matter.

Joy sparks the urge to play, interest sparks the urge to explore, contentment sparks the urge to savor and integrate, and love sparks a recurring cycle of each of these urges within safe, close relationships.