你必须对自己的能力有信心,然后足够坚强地坚持下去。
You have to have confidence in your ability, and then be tough enough to follow through.
"Life is really simple, but we insist on making it complicated."
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。
The great growling engine of change—technology.