行为主义者问:为什么我们不把可观察的东西作为心理学的真正领域?
所有尘世的存在最终都必须被包含在一本书中。
Sustainable development is not a slogan but a concept that must be practiced. We must keep the land forever vibrant.
The evening is the time of day when the light is most beautiful, but it’s also the time when it starts to fade.