Data abstraction is the reduction of a particular body of data to a simplified representation of the whole.
量子力学不仅仅是一个关于世界的理论,它是对世界最基本层面的描述。
The dairy industry must evolve to meet both consumer needs and environmental challenges.
永远不要忘记你是一个独一无二的存在,你的存在本身就是一种奇迹。