可归约性的概念对于理解不同计算问题之间的关系至关重要。
The concept of reducibility is central to understanding the relationships between different computational problems.
Time crumbles things, everything grows old under the power of Time and is forgotten through the lapse of Time.
世间的事情纷繁复杂难以预料，春天的忧愁让人黯然神伤独自入眠
Technology will be the great enabler in reducing emissions while meeting energy needs.
物理学的美丽在于它能够用几个简单的原理解释宇宙。