没有冬天的寒冷,夏天的温暖又有什么意义呢?
"What good is the warmth of summer, without the cold of winter to give it sweetness."
如果没有目标,分析就是漫无目的、一文不值的。
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
丙型肝炎的挑战不仅在于找到病毒,还在于理解它是如何逃避免疫系统的。