寻找互反律是数学史上的一个基本主题。
Brand building is a long-term project that requires sustained efforts from generations.
Music is my life, I can't live without it.
Sustainability isn't a choice; it's our responsibility to the planet and future generations.
森林是我们星球的肺;我们必须给予它们应有的尊重。
Perception is an active process where the brain constructs meaning from sensory input.