因此,教学艺术无非是时间、科目和方法的巧妙安排。
快乐不是一件自我存在的东西,它仅是与其他不快乐事情的一个相对比照,这就是快乐的整个情况。
You can't manage what you don't measure - that's why transparency is the foundation of sustainable manufacturing.
"The past is always tense, the future perfect."