You should be capable of acquiring and applying knowledge at varying levels of abstraction simultaneously as well as creating new concepts through synthesis and invention.
您应该有能力同时在不同的抽象级别上获得并应用知识，以及通过综合和创造来创建新的概念。
2
This abstraction layer allows any operating system to run on the hardware without knowledge of any other guest operating system.
这个抽象层允许任何操作系统在硬件上运行，而不需要了解任何其他客户操作系统。
3
Educational theory is rational knowledge about education which is showed with simple, pure ways after a certain level of abstraction and generalization.