"我的梦想是成为一名科学家" 用英语说为 "My dream is to become a scientist."
这句话的来源是因为你有一个目标或愿望成为一名科学家。
例句1: "Ever since I was a child, my dream has been to become a scientist and make important discoveries." (自从我还是个孩子，我的梦想就是成为一名科学家并做出重要的发现)
例句2: "I've always been fascinated by the natural world, and my dream is to become a scientist and study it more deeply." (我一直对自然世界很着迷，我的梦想是成为一名科学家并深入研究它)