对于系统，翻版的模拟是在控制图中添加一个创建循环的边，而不仅仅是一个附加节点。
For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.
自然和历史是地理知识的两个重要来源。
没有执行的愿景仅仅是一个梦想。
I prefer to buy stocks that are not widely followed by analysts.
Most people are afraid of change, but if you look at it like it's something that can always count on, then it can be a comfort．It doesn't have many things that you can count on．
"每一帧都是一幅画，而相机是你的画笔。"
"Books are the keys to understanding ourselves."