说服人的南墙指的是在交流或说服他人时，遇到了难以克服的障碍或难以被说服的情况。这里的“南墙”比喻为一种难以逾越的障碍，它代表着坚持和固执，不容易被打破或改变。
理由如下：
“南墙”在中国文化中有着坚不可摧、不屈不挠的象征意义。在许多古代文学作品和历史事件中，“南墙”被用来形容一种无法逾越的障碍或无法战胜的敌人。
在现实生活中，我们常常会遇到一些人或事，他们或它们有着非常强烈的信念或立场，不容易被说服或改变。这种难以被说服的情况就可以比喻为“南墙”，因为即使我们再努力，也很难让对方改变主意。
“南墙”这个词还带有一种劝诫和警醒的意义。当我们遇到“南墙”时，应该意识到对方的立场是难以改变的，而不是一味地坚持和努力。我们应该适时地放弃，避免浪费时间和精力。
总之，“说服人的南墙”是一个比喻，形容在交流或说服他人时遇到的难以克服的障碍或难以被说服的情况。这个词的含义来源于中国传统文化中的“南墙”象征意义，并带有警醒和劝诫的意义。
意思是交朋友，男朋友或者女朋友
朋友是指与你有一定关系并彼此认识、了解、关心和支持的人。朋友可以是你的同学、同事、邻居、亲人或任何与你建立联系的人。朋友之间通常会互相分享生活、兴趣、经验、快乐和悲伤，互相支持和鼓励，共同度过人生的各个阶段。朋友之间也可以建立深厚的友谊，成为彼此生命中不可或缺的存在。
以下是一篇关于环保的说服型英语演讲范文：
Ladies and gentlemen, it is my great honor to stand here and talk about a topic that concerns us all: environmental protection.
The world is facing a serious crisis. Our planet is suffering from climate change, air pollution, water contamination, and many other environmental problems. The consequences of these problems are devastating. They affect not only the natural environment but also human health and our economy.
Therefore, it is our responsibility to take action to protect our environment. We cannot ignore the fact that we are all responsible for the present state of our planet. It is our everyday actions that contribute to environmental problems, such as driving cars that emit harmful gases, using plastic products that take hundreds of years to decompose, and wasting natural resources.
So, what can we do to protect our environment? We can start by making small changes in our daily lives. For example, instead of using cars for short distances, we can choose to walk or ride a bike. We can also use reusable bags and water bottles instead of disposable ones. We should turn off the lights and unplug our electronic devices when we are not using them. By doing these small things, we can reduce our carbon footprint and save natural resources.
Moreover, we need to raise awareness of environmental protection among our family, friends, and community. We can organize community events, such as clean-up campaigns, tree planting, and recycling programs. We can also join environmental organizations and participate in their activities.
In conclusion, environmental protection is not just a responsibility, it is a necessity. We need to understand the importance of our actions and their impact on the environment. By making small changes in our daily lives and raising awareness, we can make a difference and protect our planet for ourselves and future generations. Thank you.