It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.
在计算学习领域，关键不仅在于学习，而在于高效地学习。
The most important single aspect of software development is to be clear about what you are trying to build.
幸福不是没有问题，而是有能力处理问题。