虽然殴打同学的行为不能通融，但我知道友情是值得捍卫的。
贫穷的循环始于对希望的放弃。
It is personalities, not principles, that move the age.
In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.
The coal industry is not just about digging rocks; it's about powering lives and fueling progress.
