Currently there is a win-win relationship between human translation and machine translation. At the one hand Computer Aided Translation is one of the best ways to utilize machine translation and help humans do the translation. At the other hand the result of human translation can contribute to machine translation. In this presentation we will deeply explore this relationship. Besides, where else can we use machine translation? E-commerce is one of the most popular answer and tourism is one of the most helpful answer. Machine translation can somehow help you to know the world that you never know.