化学的艺术在于能够分离、识别并确定构成物质的成分及其数量。
Each generation takes the earth as trustees.
The best buildings are those that grow with time, that age gracefully.
【译文】孔子说：“经常学习，不也喜悦吗？远方来了朋友，不也快乐吗？得不到理解而不怨恨，不也是君子吗？”
求和者就是希望鳄鱼最后一个吃自己的人。
You control your future, your destiny. What you think about comes about. By recording your dreams and goals on paper, you set in motion the process of becoming the person you most want to be. Put your future in good hands — your own.