Sustainability is not an option; it's a necessity for the future of farming.
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
年轻人并不堕落;他们只有在成年人已经堕落时才会被宠坏。
真正的发现之旅不在于寻找新的风景,而在于拥有新的眼光。
释义:即使家庭贫困,也要保留读书的希望;即使生活富裕,也不能忘记劳动的艰辛。
The tragedy of great power politics is that even well-intentioned states are forced to act in ways that can lead to conflict and war.
Any sufficiently advanced technology is indistinguishable from magic.