The world is full of mysteries, and that is its beauty.
农业创新不仅仅是技术问题;更是关于改变思维模式,为子孙后代拥抱可持续实践。
燃气发动机是所有热机中最完美的,因为它结合了蒸汽机和内燃机的优点。
Show me your calendar and I will tell you your priorities. Tell me who your friends are, and I’ll tell you where you’re going.
地理学的研究是对地球作为人类居住地的研究。