The third one I want to talk about quickly is the progression dynamic, 第三个我想快速讲一下的是进步动机， where you have to sort of make progress, 当你不得不进步的时候， you have to move through different steps in a very granula
人与自然英语演讲稿：The true harmony between man and nature Good evening, Ladies and gentlemen. My name is Liang Zilin. As we know, terrible environment is a big threat to human’s physical health, even menta
