农业的未来在于可持续发展,我们要为子孙后代留下绿水青山。
保持专注,专注于你的目标。
Understanding is the foundation of all wisdom.
膨胀的概念表明,宇宙在大爆炸后不久经历了一段极其快速的扩张期。
The challenge for modern states is to maintain their legitimacy while also being effective in providing services and maintaining order.